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> LYN Power Tools Discussion, Bosch, Hitachi, Milwaukee, Metabo, Hilti

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TSbahathir
post Sep 29 2011, 07:26 PM, updated 12y ago

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Hi, want to see how good is the rotary hammer, compared to impact drill ?

Attached Image

I just published a simple video clip showing the performance comparison between typical impact drill and rotary hammer to youtube, for educational purpose.

http://www.youtube.com/watch?v=RZ6BZI27gSg

BTW, please follow the safety precaution while handling and operating power tools. I was very lucky because no injury occurred during the making of this video clip.

I used Exceed brand 550W impact drill which I bought some years ago. The drill bit is moderately used, but still in good condition. The size of the drill bit is 6mm, which I bought from local hardware store. For rotary hammer, I used 2 SDS+ drill bits, 6mm and 12mm. The concrete block looks small, but is also quite awesome, because, it is quite heavy, at 39.4 kg. From the density calcution, the concrete block density is 1800 kg/m^3

The first cut, I drilled with impact drill, and you can see it took about 1 minute to drill to the depth for inserting typical plastic wall plug (wall anchor). What we cannot feel from the video is the 'pain' caused from the vibration. smile.gif

The 2nd cut, showing the drilling with rotary hammer with 6mm drill bit, it tooks about 3 seconds. Since it finished quite quickly, I tried with 12mm drill bit, and you can see yourself the result in the 3rd cut. smile.gif

Finally, here is the behind the scene, when making this video clip. smile.gif

Attached Image

If Makita HR2810 is my favorite power tool, then the 'Keep' brand ball head tripod is my favorite photography tool. smile.gif

BTW, I am just an IT guy, and DIY or home fixing is just my hobby. I am not a professional photograher, movie maker or trade man. So, please excuse me for the video clip quality.

Update: 2011-12-02
I just published another youtube clip demonstrating the rotary hammer's power. Yes, it is possible to drill into wood, but, the hole is not as clean as when drilled using proper wood bit. :


Camera: Ricoh GXR P10.

Update : 2011-12-10
Quick review: Boyai BY2.24R. Cheap China mad 24mm rotary hammer.

http://forum.lowyat.net/index.php?act=ST&f...2051914&st=140#

Update: 2012-02-27
Change the title from Impact drill vs Rotary Hammer. (Video) to [Power Tool] Masonry/Concrete Drilling to generalized the methods to drill into concrete or masonry.

Thank you..

Reference:
Correct way to handle power tool
http://www.youtube.com/watch?v=oGphjIuyDg4

Cordless impact drill vs cordless rotary hammer
http://www.youtube.com/watch?v=SKDIggpbXqU

This post has been edited by bahathir: Feb 27 2012, 10:00 AM
weikee
post Sep 29 2011, 09:19 PM

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How much is your HR2810 ?
TSbahathir
post Sep 29 2011, 10:03 PM

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QUOTE(weikee @ Sep 29 2011, 09:19 PM)
How much is your HR2810 ?
*
Makita HR2810 cost me MYR640, but compared to other 'well known' brands with similar specs, it might be the cheapest.

The cheap impact drill cost me around less than MYR200, it still can do it's jobs, but, the performance and ease of work is more important.

You can get a cheaper and lighter class of rotary hammer, 18-24 mm, which might cost around MYR400-600 for well known brand or MYR200-300 for cap ayam brand, and still can out perform any impact drill at any price.

Bottom linr is, rotary hammer is an excellent tool for drilling into concrete, bricks and masonry.

This post has been edited by bahathir: Sep 29 2011, 10:20 PM
weikee
post Sep 29 2011, 10:26 PM

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I know rotary is superb. Use one for sometime and it make impact drills like baby.
JinXXX
post Sep 30 2011, 09:56 AM

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QUOTE(bahathir @ Sep 29 2011, 10:03 PM)
Makita HR2810  cost me MYR640, but compared to other 'well known' brands with similar specs, it might be the cheapest.
*
thats quite reasonable...

does it have a "hammer-only" aka chiseling function ?

cause bosch with 800w with 3j hammering cost abt 800 bux..

http://www.makita.com.sg/products_details....mID=60&typeID=2

from here seems like your is the same only the weight is different abt 1kg..
TSbahathir
post Sep 30 2011, 10:20 AM

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QUOTE(JinXXX @ Sep 30 2011, 09:56 AM)
thats quite reasonable...

does it have a "hammer-only" aka chiseling function ?

cause bosch with 800w with 3j hammering cost abt 800 bux..

http://www.makita.com.sg/products_details....mID=60&typeID=2

from here seems like your is the same only the weight is different abt 1kg..
*
Sure it has. Look carefully at the mode selector in the picture or in the video clip smile.gif. BTW, HR2810 is 3 modes rotary hammer (aka combinational rotary hammer) with capability to drill 28mm drill bit into concrete. If you go to hardware shop, look at how big and heavy is the 28mm drill bit, For typical DIY, 16-22mm class rotary hammer is MORE than enough. typical 24mm and larger rotary hammer might has hammer only (chisel) mode.

In my case, The chisel mode is really handy, when breaking big stones, cements, bricks and roof tiles which are buried in my garden. I need to remove these 'unwanted' material before I able to dig deep enough to plant a tree. Honestly, I was in dilemma to choose 18mm (Makita HR1830) and 28mm (Makita HR2810), because, HR1830 is smaller and lighter (1.7 kg), but the chisel mode is a big plus, eventhough it is a bit larger and heavier (3.2kg).

This post has been edited by bahathir: Sep 30 2011, 10:57 AM
JinXXX
post Sep 30 2011, 10:57 AM

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thats good to know..

just curious can also share your "bits" collection for the makita ? lol smile.gif


TSbahathir
post Sep 30 2011, 11:16 AM

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Actually, I got Makita brand 5 pieces SDS plus drill bit set (6, 6.5, 8, 10, 12 mm) FREE, when I bought the rotary hammer. smile.gif It is more than enough because, I only use 6mm for most of the wall anchoring.

I also bought flat chisel and bull-point for breaking and minor demolition. smile.gif

BTW, I am not a contractor, so, my tool collection is simple. smile.gif

See it for yourself. smile.gif

Attached Image

TQ
weikee
post Sep 30 2011, 11:28 AM

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If not mistaken black and decker rotary 18mm (or was it 20mm) version have chisel mode only.
JinXXX
post Sep 30 2011, 11:35 AM

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QUOTE(bahathir @ Sep 30 2011, 11:16 AM)
Actually, I got Makita brand 5 pieces SDS plus drill bit set (6, 6.5, 8, 10, 12 mm) FREE, when I bought the rotary hammer. smile.gif It is more than enough because, I only use 6mm for most of the wall anchoring.

I also bought flat chisel and bull-point for breaking and minor demolition. smile.gif

BTW, I am not a contractor, so, my tool collection is simple. smile.gif

See it for yourself. smile.gif

TQ
*
seems like a very good investment if your into DIY , handy tools are handy when they are needed tongue.gif
TSbahathir
post Sep 30 2011, 12:06 PM

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Yes, and who knows, I can do 'part time' wall fixing/anchoring job in future.. smile.gif heh eh e..

IMHO, any brand rotary hammer can ease your drilling job. In my case and perfect situation, I can drill 6mm hole in 3 seconds into concrete. and if your rotary hammer can do it in about 10 seconds or less, it is also OK. Compared to 1 minute of pain and agony when using impact drill.

BTW, drilling into typical wall should be fine with impact drill, which may take about 10 to 20 seconds (based on my limited experiences), but once you hit concrete or harder material, then the it will be another story. Imagine if you need to drill 20 holes for curtain railing, where in some case, the location of it are at concrete beam. Also if you live in high rise building, for sure, the wall is a hardened concrete.

Oya, if you cannot afford to buy a decent rotary hammer, you can try to 'RENT' it from hardware store.

This post has been edited by bahathir: Sep 30 2011, 12:22 PM
JinXXX
post Sep 30 2011, 12:14 PM

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QUOTE(bahathir @ Sep 30 2011, 12:06 PM)
Oya, if you cannot afford to buy a decent rotary hammer, you can try to 'RENT' it from hardware store.
*
yeah but not all hardware store do rental,

and price wise not that economical... unless u can rent a 1k to 2k tool ..

for a tool worth 600/700 better just buy it outright...
TSbahathir
post Oct 4 2011, 12:34 PM

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Another impact hammer drill vs rotary hammer comparison.

http://www.youtube.com/watch?v=6UMY4lkcCqE

This post has been edited by bahathir: Oct 24 2011, 02:14 PM
yi_min82
post Oct 9 2011, 11:08 AM

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hi.... u like diy?...where u from?...i also got some of power tools...

This post has been edited by yi_min82: Oct 9 2011, 11:10 AM
JinXXX
post Oct 9 2011, 01:29 PM

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QUOTE(yi_min82 @ Oct 9 2011, 11:08 AM)
hi.... u like diy?...where u from?...i also got some of power tools...
*
in before pics or it didn't happen smile.gif share la
azrudin99
post Oct 9 2011, 11:23 PM

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QUOTE(bahathir @ Sep 29 2011, 10:03 PM)
Makita HR2810  cost me MYR640,
*
bro where did u buy this?
TSbahathir
post Oct 17 2011, 11:53 AM

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Ok, Here you go... I bought the rotary hammer here. smile.gif Call them for availability and 'new' price. smile.gif

CODE

No 517, Jalan 18, Taman Perindustrian Ehsan Jaya, Kepong, 52100; 03-6277 1187


Other accessories are from varous hardware shops.

IF you unable to get Makita HR280, Makita HR2470 also a good choice, 24mm, lighther, also has chisel/hammer only mode, and one of the very popular models around.

TQ.

This post has been edited by bahathir: Oct 17 2011, 02:50 PM
ride00
post Oct 17 2011, 02:46 PM

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Advice needed here please :-

I have to mount about 10 s/steel shelves
onto homogen tiled walls.

My old B&D impact hammer drill keeps burning
the tile bits, smoking when operating and takes
like 2-5 minutes to bore 1 hole. Too much of a
hassle...even my wrists ache after 3 holes!

Can any of you here offer me some solution
or advice? Many thanks.
TSbahathir
post Oct 17 2011, 02:56 PM

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For tiles, you can use SLOWER speed at rotary only mode. You also an try drill bit with CARBIDE tip, or try the Bosch Multi purpose drill bit. Also, try to apply grease or lubricant oil to cools down the drill bit's.

Oya,... PUSH HARDER... smile.gif

Good luck.

This post has been edited by bahathir: Oct 17 2011, 03:14 PM
ride00
post Oct 17 2011, 03:16 PM

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Gosh your tip is appreciated.

Been using hammer mode plus hi-speed
so now I will use rotary mode, slower speed
plus oil or water to cool/lube the tile bit.

Will try this ltr today and hope it solves
my sore wrists and burnt bits! If cannot
then it's diamond bits for me.

Thanks!

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