Since there is no topic about this type of power tool, I want share my 'limited' experience using it. I already posts some messages related to impact driver in my Rotary hammer thread, and I want to dedicated this thread to impact driver.

To be clear, impact driver is NOT impact drill. Main purpose of the impact driver is for driving screws or bolt. With drilling bits, it also can drill small holes into wood, plastic or steel.

For many years, I was using hand tools, such as screw drivers and wrenches for my home DIYs, Most of us know how hard or exhautive when using screw driver to drive screw into wood, especially the long screws.

In about year 2000, I tried, Black and Decker's cordless screw driver for PC repairing, then I realized how convinient the power tool is. So, I bought Bosch iXO compact screw driver. It works well and really make things easy, driving screw into wall plug for cuitain rail anchoring. It was slow and easy to drive the screw, but much in torque to drive a long screw into wood, so, still I need to use hand tool. I moved to new house, and it need lots of drilling and anchoring. The iXO battery failed, while lots more to go, and I don't have time to go to service center for battery replacement. I decided to get a corded power tool, and I got this Makita TD0101F impact driver. I don't mind the corded power tools because, I have 2 units of 10m extension cable, which will cover every inch of my house. BTW, I never used impact driver before, and very suprise of the result. Most of the screws driving were quick and not going into the 'impact' mode at all.

I did some experiments with this impact driver, by driving longer (3 and 4 inches) screw into wood. As we can see, when the impact mode is engaged, you can hear the familiar sound like at the tire workshop when removing/installing wheel nuts, the shaft turn slower, just like it was on very low gear. If I maintain to push it at certain force, it never slip at all, and the screw's head/slot is not going to be damaged.

I published a video clip in youtube, demonstrating the power of the impact driver.

Enjoy


Update 1: 20120221
As we already saw in the youtube clip, the 'impact' mechanism is the secret to get more torque from small motor.
There are 2 types of impact driver.

1) Typical impact driver.
The one the most popular and available. Its come as corded and cordless type, in several size.
The cordless impact driver usually small, lightweight and compact. The torque range from 90Nm-165Nm

2) Soft impact driver
This new type of impact driver uses hydraulic oil to soften the impact, and make it more silent. The torque is around 30Nm. I never saw this type, but you can find it from Makita and Hitachi Japan.
Makita 6963SPK : From latest Japanese Makita catalogue
Hitachi WP12VA : http://www.hitachi-koki.co.jp/powertools/p...2va/wp12va.html

There are even higher torque impact driver, which called impact wrench. It can take a larger socket diameter with torque between 200-2000 Nm.

Updates, 2012-03-04


Demonstration screw driving using several hand tools and power tools. For details, go to page 4 in this thread.




To be continued....



Thank you.

This post has been edited by bahathir: Mar 4 2012, 04:10 PM

Reserved for accessories and references.

This clip explains how impact driver works. Now I understand, why the impact driver is a great tool for fasterning or driving screws or nuts, even with a small compact impact driver. The secret is, how the 'impact' mechanism works.


This clip show the differences between impact driver, drill driver and combi drill driver
Notice that the impact driver has small hex shaft quick change chuck.



See, how convinient to drive these long screws... I am wondering how long I'll take to drive these long screws with handtool screwdriver.


Corded and cordless impact drivers. There are pros and cons, but I loving my corded impact driver. Nowdays, it is really very hard find corded impact driver...




U[date: 2012-03-05
Impact driver vs Soft impact driver
Coparison of normal impact driver and soft impact driver. Even though the soft impact driver has lower torque 30Nm, but, it is cool. The model is Makita 6963SPK which only can be found in Japan.



Check this out, this one is much advanced... 100 % electronic control for torque and impact.

BTW, it sound similar to oil damping soft impact driver.
Hitachi WM14/18D
http://www.hitachi-koki.com/powertools/pro...bl/wm18dbl.html
How the mechanism works.



Enjoy


Thank you.

This post has been edited by bahathir: Mar 5 2012, 04:39 PM

Why do you need impact when screwing in?

I'll answered it later in 'references' post. The 'impact' feature will increased the torque without lowering the motor's speed. Normal drill driver's motor speed will decrease when higher torque is needed. If the motor speed slows down, the effective torque also decreasing, until it cannot turn the screw anymore.

Got what you mean, I like cordless tool with "gearbox" can increase the torque. But I seldom see this here in Malaysia

I saw a few cordless drill models at Living Depot@Bangi, and usually expensive. I think the 'expensive price' is not popular in Malaysian market.

Yeah, economical is majority concern. But I prefer to buy one that can use for many application. Since now I use 2470 for screwing also (I know is overkill), can slowly find one with the gear option and reasonable price.

wei kee, eh using 2470 damm heavy le to screw things. get impact driver like bahathir's makita around rm260, light and easy

+1 .. so where to get at that price or cheaper ??

Yes, you can use rotary hammer (drill only mode) to drive screws. BTW, IMHO, HR2470 is not too heavy, at 2.6 kg, which is about as heavy as a brick. There are a big and heavy cordless drill driver which can reach almost 4 kg!! The problem is, the rotary hammer is long, and quite difficult to control the screw driving. If it is a long and big bolt using hex socket, it will be not much problem using with the rotary hammer.

This post has been edited by bahathir: Feb 20 2012, 05:45 PM

the place i got my bosch 2-26 at masai. the uncle quote me rm260, but i think their cordless more expensive.

masai ??? cordless is always more expensive...

but if the bosch impact can get for 300 then its a good buy else... better get a corded...

---

Added on February 20, 2012, 5:52 pmbahatir : maybe you should change the title/topic to cover

discussions like power screwdriver and so on...

some people don't know what impact driver is...

at least that way we can keep discussion about tools that drive things into a wall/wood/etc

This post has been edited by JinXXX: Feb 20 2012, 05:52 PM

I already started rotary hammer and impact driver power tool threads. So, I hope other DIY sifus can create other power tool's thread and share your knowledge and experince. The most common power tools that I think of is..

1) Angular grinder
2) Multi tools
3) Saw
4) Measuring tools.
5) Plane..
6) Multi cutters...

I hope with those threads, we can educate peoples to do DIYs much efficient with more productivity. I alsp hoping this kind of threads can be 'sticky' as a references to others.

Thank you... and happy DIYing

---

Added on February 20, 2012, 5:58 pmThank you for the suggestion. I'll put the description in a moment.

This post has been edited by bahathir: Feb 20 2012, 06:02 PM

Ok lah nit too heavy but for lots of screwing better get smaller unit. But I got no budget yet.

Just to share my new toy Bosch GDR10.8.
just to share reference size between 226(nearly same size as 2470) and small impact driver


Attached thumbnail(s)

how much for your " Bosch GDR10.8." ?

Thank you for your power tools' pictures. Great matching combos


I am sure, both are working hard to make your jobs easier.

Bought RM330. Special price from boss

Bahathir, need some time to get used to new tool.

That's OK. at least your masonry drilling already taken care... If you got your impact driver, please do share with us too ...

---

Added on February 20, 2012, 8:27 pmYeah, every new things, skills need training and experiments. I am sure you dan get used to it...
When I was using the impact driver for first time, I also thought my previous Bosch iXO screw driver is better... but, once I knew it's behaviour, everything about normal screw driver goes away..... Just take time to get used to it. As always... starts slowly. Learn how to control the trigger.

This post has been edited by bahathir: Feb 20 2012, 08:27 PM

oh.. okie..

guess i need to find a boss that can give special price.. else just take the makita corded

then no need waste time pusing pusing the screwdriver and hurt my wrist

I wonder if these tools is cheaper in SG, i got 20kg luggage to spare this week in SG

deleted

This post has been edited by totally_skint: Feb 21 2012, 01:01 AM

Some fun with my impact driver. BTW, the screw driver bit was VERY HOT. If you want to try this at home, please wear a thick leather gloves.



Enjou

I wull update this thread time-time with more informations.
Thank you.

my personal preference is makita..so 'tahan lasak'...

This post has been edited by tomjason: Feb 22 2012, 01:49 PM

You must be a Scout.
A 21st century Scout.

This post has been edited by totally_skint: Feb 22 2012, 09:24 PM

... No la.. I am not a scout, just remembered what I learned in history text book, many-many years ago.

That just demonstrate that misuse of power tools can be very dangerous and hazardous. I hope I can show something new next week. No promises... Stay tuned.

This post has been edited by bahathir: Feb 23 2012, 10:46 AM

u got steel bar ? maybe can test out those screw bits with drilling bit infront to drill into metal and screw one..

eg those use for aluminum awning


This post has been edited by JinXXX: Feb 23 2012, 08:18 PM

Thanks for the suggestion. That is 'self tapping screw', which creates screw thread when we driving it into a pre-drilled hole. THe drilled hole should be a bit smaller than the screw size. Normally a thread maker tool needed to make the thread, but this self tapping screw can be used without using that thool.

I hope I can find few of it in hardware shop. I don't have steel bars, but, I think it can use is to attach something to somthing in future.


Thank you.

okie not sure what the proper name was...

is there self tapping screw for concrete ? lol , lazy wan drill hole put in the wood/plastic then attach the screw

Yes, it is... commercial name is TAPCON .. I already asked this type of screw at local hardware shop... but, they also seem 'blur' about it.

hi

????

Hi. Welcome to this thread. Feel free to ask or share your opinions.

hi guys, i found something useful for drill users, this item can convert to impact driver, for a cheaper price

Kennedy Impact driver set.
http://www.cromwell.co.uk/KEN5737100K

---

Added on February 25, 2012, 9:51 amerks post in the wrong place should be in rotary hammer tread. sorry...

This post has been edited by Eng_Tat: Feb 25 2012, 09:51 AM

Impact Driver actually can help you to screw in a screw faster especially in hard wood and steel.

The impact drive act like a hammer hammering the screwdriver to turn the screw in. During screwing screw in hard wood, we normally face the the philips screw head worn and we need to use plier to take it out. Sometime , harder wood will make the screw head break in to two parts. If you use impact driver then really seldom have this kind of problem anymore.


Bosch GDR10.8V really best " screwdriver " I had. I bought it since last year July and it was my daily tools. This model is Generation Two already and this tools made in Malaysia and we should support Malaysia Product . Haha

It really small in size, light in weight and but once it do it job , it work like charm.

But cons of this tools is it only comes with one battery.


Generation One :
Generation Two :


I have a lot of self tapping screw and it most common used in steel. Last time , we need to use drill bit to drill a hole and then just screw it .

Any one want me to show how it work ? I also have other tools to show, anyone want to see ?

just post.. it la sure got ppl will appreciate it one

if can also try the tapcon screws.. no need use the plastic/wood thinggy already

Yalah. You're not the only one getting confused.
So similar subject.

yeah mine is gdr10.8 mk2 and its made in malaysia. only come with one batt tho but i think is sufficient for diy users. now i am looking for their driver heads. anyone try kennedy brand before here???

Can we use an impact driver for drilling?
I think I saw a special drill kit for use on an impact driver.
Anyone try it?

is there any chuck to convert impact driver to drill? chuck to hold the bits. i think having separate drill is better to prolong the life of equipment

Brought this set 2year ago for rm290. Model gsr10.8v-liq bosch. Use for screw and drilling till 4mm dia. Bigger drill no torque. It have torque adjustable 1-10 (probably max 10kgf/cm) which good for screw. It come with a torchlight which you can use the drill battery.

seems like bosch prices quite stable... or hovering in that range

Ya, one battery sufficient for DIY, but sometime you need the job done in quickly and urgent, I don't think one battery is sufficient. Because you need to wait the battery fully charged in 30 minutes, but really fast compared to
older technology, NiCa which need more than 1 hours


You mean this type of chuck ( 1/4" Chuck ) :



I get the picture from lelong.com.my

Sure can , but the drill bit a bit difference , it must have 1/4" hex shank because the Bosch Impact Driver only come with 1/4" Chuck. But the drill bit also more expensive compared with normal drill bit , I bought the drill bit before and just few hardware shop selling it.

The 1/4" Shank Drill Bit :

Or you buy 1/4" Hex Shank chuck like what Eng_Tat Mentions.


Where did you bought it ? Taobao ? Because this model only available at China

This post has been edited by limhongwoon: Feb 26 2012, 03:37 PM

Ohter tool which can drive screws... but not as efficient as impact driver.
In this clip, I showed how I drill holes into wall with ceramic tiles.

But the special thing is, I am using rotary hammer with 1/4" hex adapter to use my impact driver's screw bit. A bit awkward and difficult, but it can done...

Enjoy

Yeah. Like that.
I assume you will be using normal drill bits?

What happens when the impact mechanism kicks in while drilling?
Also will the drill bit hold steady when spinning or will it "wave" about (like the screw bit in bahathir's rotary hammer video above)?

If you use the chuck then you can use normal drill bit

If without the chuck , you need to buy special drill bit that designed for 1/4" Hex Chuck.

But the risk , when the drill bit stuck during drilling a steel , impact action will make the drill bit break into two parts because the impact driver will start hammer if got somethings stuck. I think it will create wave or vibration because you already add a big things on the impact driver and it may create more wave or vibration during high speed

Not sure what is the price now for this. I guess the price is reasonable.

Agreed. Impact driver's impact mechanism gives extra TWIST or torque to spin the bit. Remeber, impact driver torque is much bigger than normal drill driver, and the the chuck's jaw cannot grip the cylindrical shaft's bit. Sometime, this extra torque impulses also can loosen the chuck's too, especially in reverse mode. So sometime, better get separate specialize tools for greater result. I know, as a DIYs, we have a limited budget, so, getting a good tools which last longer is very important.

In my case, masonry/concrete drilling is a very tough to the tool. You may get 3 in 1, or 4 in 1 cordless impact hammer drill driver, but, really, how much you achive with this tool? the 4 in 1 cordless tool, exmample BTP140, is very rare in Malaysia, and it may cost you MYR2000 or more. Hey, I bought Makita HR2810 rotary hammer + Makita TD010F impact driver + Makita GA4030 angular grinder, and it still cost HALF of the Makita BTP140! Yeah, sometime conveniences cost more than performance. Yeah, different people, different needs, so up to you to decide which tools are sutable for your need.

Thank you.

Ya, for DIYer. Price ( Cheap ) and durablity ( Last Longer ) is more important. For DIYer, most common tools is Rotary Hammer, Screwdriver and Angle Grinder. If you need to screw a lots screws, impact driver is the most suitable.

For me, portability and performance is the most importance because sometime doing small task at outside or on roof or other. Impossible to bring a 10metre to 50metre wire to outside or roof just for drill one hole, that why I bought a Cordless Hammer Drill.

But tools in Malaysia is the way too expensive, if you bought some tools from USA and send it back , it still cheaper than here.

Brought at jln taman tan yew Lai. I see few shop got sell this model.

If only they put in a switch to turn off impact action

Cheap and durability don't exactly go together.

Damn!
I need to do the occasional drilling but I also need to drive screws into some tough wood.
The wood is hard enough I can't hand-screw the screw all the way in.
I'd love to buy two power tool (power drill and impact driver) but have only budget for one.
I guess the power drill should be my first tool then.
Any suggestions for features I should look out for?

all your answers is here.. http://forum.lowyat.net/topic/2051914

I drill a hole on the hard wood. Slighty smaller hole than the screw size. That make it easy to screw in.

If you need to drive screws alot, impact driver is the more proper tool. Impact driver also can drill into wood, steel and plastic too, with proper drill bits. So, try the impact driver first.

This post has been edited by bahathir: Feb 27 2012, 08:39 AM

I just added couples of youtube clips in posting #2 in this thread.

About the corded power tools: Since I am using my power tools around my house, which is not 50meters height, so with 2 10m extensions, I can get almost every inches around my house. Last time I installed an outdorr antenna IN the roof, yup, NOT ouside, but IN the roof attic. I mount the pole holder to the roof supporting frames wood with screws, using the corded impact driver. Another case, I drilled holes into the wall OUTSIDE, near my house's number for the instellation of the wireless door chime's switch/transmitter, using my corded rotary hammer. Yeah.. luckily I got power outlet points at the strategic locations around my house.

Nothing is bad about cordless power tools, but, if possible, I'll try to avoid them at the moment. Unless, I am doing the installtions on building sites where there is no power outlets in the reach, and it doesn't matter because, the company is suppying the tools to workers, NOT form my pocket money.

Thank you.

how's the signal quality ? won't it drop since need to pass through the roof tiles ?

Since the antenna has built-in booster, the signal reception is fine and as good as any outside antenna. A good thing is, it last longer because it is not exposed to heat, sunlight, strong wind, rain and bird's dung .. heh eh he.. The antenna syustem also can rotate remotely, so it easy to get better signal. Since is not outside of your house, it make more aesthetic looking house.

Try first,...

This post has been edited by bahathir: Feb 27 2012, 11:32 AM

brand n model please.. looking for 1 to replace the old rusted antenna from like grandfather's years ago

I;ll check it out later.. or I may take the picure of the antenna in the roof attic.


This post has been edited by bahathir: Feb 27 2012, 03:14 PM

I wouldn't say "a lot" but certainly the need for screwing is more than drilling.
But if I had a good drill I'd guess the need to swiss-cheese my house would then increase by a lot.

What about a heavy layer of rain water on the tiles?

Just thought of another advantage to having your TV antenna inside is protection from lightning strikes.

This post has been edited by totally_skint: Feb 27 2012, 10:04 PM

anybody know the price for

TD090DWE 10.8V Cordless Impact Drvier - Model TD090DWE
http://www.makita.com.sg/products_details....ID=254&typeID=2
( Max fastening torque : 90N.m )
Net weight : 0.9kg (2.0lbs)


GDR 10,8-LI Professional , priced at about 400 bucks retail, some forummer said he got it at 300 (special friend price)
http://www.bosch-pt.com.my/papocs-my/Trade...21593/index.htm
( Torque, max. (hard screwdriving applications) 105 Nm )
Weight incl. battery 0,96 kg

I just published another youtube video clips demonstrating driving screw using several type of tools.

1) Phillips screwdriver, Torque: As much as my hand can twist.
2) Mini ratchet socket/screwdriver, Torque: Larger than screwdriver
3) Bosch iXO, 2nd generation. Torque: 4Nm
4) Makita TD0101F, impact driver. Torque: 100 Nm

I am not a skillful as a professionals...so, this might NOT representing the most efficient way for driving screw.

Enjoy



Thank you.

This post has been edited by bahathir: Mar 4 2012, 04:12 PM

Does it have a torque adjuster? My experience with this tool, you need to adjust the torque for certain screw. 105N is high for small screw.

i pity your wrist using the screwdriver...

damn 1/2 the video is showing you screwing and unscrewing the screw using a screwdriver..

give me back my 2 1/2 minutes . lol ahha

nice vid.. , thanks for sharing

This post has been edited by JinXXX: Mar 4 2012, 04:11 PM

Sorry for the typo...

Yup... 2 1/2 minutes of exhaustive twisting. I can do the fast forward, but I really want the show the real thing and why I choose power tools.

Imagine how hard to screw driving with hand tools. Actually, I already drove several time with hand tools, before taking the video. BTW, most of the my screw driving were for wall anchoring, ie, screwing into wall plugs. That were much easier than what were in the video.

This post has been edited by bahathir: Mar 4 2012, 04:20 PM

To buy a screwdriver, get a hand grip that diameter is big, have rubber grip and some flower pattern. It give you stroger force to turn.

I don't to use rachet. It difficult to central the turn and easlly spoil the screw head. Rachet mean for small place use.

Yes, ratchet driver is for small place and limited spaces, where we cannot use longer screwdriver.

Actually, I also have a ratchet screwdriver, but the handle diameter is smaller than the screwdriver in the video. I tried that also, and did not give a better result.

The problem with handtools is to keep the screwdriver at the screw's slot firmly, especially when we want to give extra torque/twist. It tend to move and slips, which may damaging the screw's head or the screwdriver's tip. The cheap screwdriver's tip is easier to be damaged and useless in no time.

I have a rachet driver too. But rarely use.

Additional, look for screw driver that the tip )which about 10mm) is different color. Probably the color like brown, grey or black. Those tip is harden than the shaft side and not easlly damage.

Sorry for the delays... Here is the picture of the antenna mounted in the roof's attic.
I am using PVC pipe as the pole/mast. Easy to cut to the length I wanted.

---

Added on March 4, 2012, 5:29 pmBut, the cheap one from MYR2 shops also has the 'black' colored tip, and not as good as a branded one. . I have several occasions when I really really need to drive screws, but the the screwdriver's tip was damaged, and really made me frustrated. Even a simple handtools also need to be good in quality.

So, if you want to use it for long time, get a better branded one from hardware shop.

This post has been edited by bahathir: Mar 4 2012, 05:33 PM

no idea about the torque adjuster..

i think the trigger is some kind of control..

can't comment on it ...

Yes, the impact driver has variable speed control trigger. Start with slow speed and practice using it for better control. I also using my impact driver to remove computer parts, electric fan and washing machine's screws. Most of the time, it did not engaged the 'impact' mechanism at all

The cordless screwdriver, Bosch iXO which I was using in the video does not have any speed control.

Faster spin -> higher impact rate -> more torque.

This post has been edited by bahathir: Mar 4 2012, 05:47 PM

The MYR2 already told you it is not. Cheat you with some coloring.

I have some good screwdriver which the tip is harden and last long. This are from japan.

---

Added on March 4, 2012, 6:19 pmThe 1 I use have torque adjust which normally adjust at 30-40Nm. That is about our normal hand torque. 105Nm can break the screw head specially small stainless screw.

This post has been edited by ozak: Mar 4 2012, 06:19 PM

+1. I also had a pliers and set of precision screw drivers which I bought when I was in Japan, and were long lasting until they were lost ...

Beside the tool's quality, using it appropriately also can make things last longer. Always use the correct tools.

My office have alot of japan made tool. Those japanese brought here and never take back. Some I ask them to steal from my HQ in japan.

After many years of use, I able to compare the quality with china or local make tool and what design of the tool is best.

Last time my japanese sifu always knock my head when I use wrong tool for the job.

LOL... at least we learned something... ha ah ah a... The Japanese made tools are stronger then our head. heh eh heh e..

Yes, Japanese are very strict when working in factories or construction sites. They don't want anything happen which may cause tool to damage, injuries or death. That's why if you read any branded power tool's manual, 70% of pages are about safety. and correct ways to use the tool.

In Japanese factories and construction sites, you will always see this slogan
安全第一
Anzen Dai Ichi.
which means, "Safety First"

Here in Malaysia, .. IMHO, I can say お金第一 (Okane DaiIchi).. which means... Money First. See at your nearest construction sites, how many workers are using safety harness? or at least crash helmet ? The safety guides are already there, but.... who read and follows those guides?

I hope we all can spend some time to read the power tool's manual, understand and follow it. Buy a good leather gloves, safet glasses/goggles, appropriate clothing and shoes while using the power tools.

Thank you.

This post has been edited by bahathir: Mar 4 2012, 07:47 PM

I once got a love blister in the middle of my palm from pushing down on the top of the screwdriver while twisting it.

bahathir, instead of holding the mini ratchet like you're flushing the toilet, try holding it backwards with your wrist above the screwdriver bit's axis ie. above the ratchet mechanism
You might need to place the bit between your fingers too.
That way you can push in and twist with one hand.

Thank you for the suggestion. Actually, I tried to drive the screw as FAST as possible, and the result is, what you can see in the video. Freestyle twisting.. I can put enough torque, but cannot twist quicker with the mini ratchet. Another feature of the mini ratchet is, it also come with hex socket wrenches. Next time, I may put some pictures how to use socket wrenches using impact driver and mini ratchet. It is nice small tool which I can carry along outdoor.

BTW, where did you get the "Mini ratchet"?

If you want to buy Makita TD090DWE, try contact the sole distributer, Jasakita Berhad, and ask them the nearest reseller which selling that model. I contacted them, before I bought my rotary hammer.

http://jasakita.com.my/


I found this comparison video, Makita TD0100 vs TD090DW, corded 100Nm vs cordless 90Nm. A newer cordless brushless impact driver, BTD14x series are more powerful, 140-165Nm, but, ... expensive and, you are very lucky if you found one in Malaysia.



TQ


This post has been edited by bahathir: Mar 5 2012, 10:58 AM

Another type of impact driver, the soft impact driver.
The model, Makita 6963SPK Japan only model, and I really wish I can try one. The torque is only 30Nm, but enough for most screw driving tasks.

Sometime slower is good. Too fast maybe dangerous and can easy slip and hurt your hand or maybe jump out and hurts other part of your body or passer by.

I had experience before using normal cord drill, and use too much power break the screw and flew and lucky hit to the wall.

their office/hq(jasakita) is near my place only.. if they got accept walk it cash sales for makita products, it would be damn nice..

seems like 090 is 2x slower than 100, but the diff is only 10Nm, but i think ill take the cordless, since the portability is most important for screwdriving.. if i need any extra power i can just put the screw bit to my impact hammer - hammer and screw

will need to contact them to see where got sell the 090.. hope the price is reasonable and cheaper than bosch, else get bosch

Yes, corded drill is not recommended for screw driving, because it is difficult to control power. Corded drill only produce torque when we put more power to it. Once it's start spinning, and slipping from screw head, it tend to spin at high speed and damaging the screw head, or screw bit.

Corded or cordless Impact driver is design for screw driving. When the impact mechanism is engaged, you can see it spin slowly, but maintaining the motor speed/rpm. It is like engaging low gear. This make screw driving very controllable and efficient. IMHO, I feel very confident using the impact driver.

In the video, the the small Bosch iXO cordless screwdriver spins much slower than the impact driver, but, if you look carefully, it slipped TWICE while driving the screw. So, slower speed doesn't mean it can drive screw efficiently.

Thank you.

yeah depends on the screw head and the screw's head quality, people tend to missmatch the sizing when using screwdrivers..

which is the main cause of "head-gone/kena makan" ...

too bad dont have high-speed cam to record the drilling in slo-mo so can "see" the difference

---

Added on March 5, 2012, 2:33 pmwell i used to use my B&D drill to do screwing, problem with it is the size and corded , never experience damaged screw head.. before

the only worst one was the screw head patah from the screw, lol hahahahaha

This post has been edited by JinXXX: Mar 5 2012, 02:33 PM

Agreed. use correct size of the screw bit. Typically, Phillips #2 is the most common size. I said it is difficult to control the drill power, but, if you already using it for long time, you able to manage to control the power as you like. Yeah, the main problem is the weight. I already tried screw driving with 3kg rotary hammer, and it is not as pleasant as using impact driver.

Screw head broke/patah ? heh ehh e.. I already broke several screw's heads and the tips of 2 high quality screw bits. I need to control my anxiety and adrenalin, for not over using the impact driver. That's what we call experience.

That is why torque adjustable is a must for me. Once run till the torque that is set, it will stop turn. Even no problem in fast mode.