Yes, sure.... but, I can start small by building a 'reban ayam' first. . Wait, I don't have a land area for it.


Back to the topic, here is a youtube clip, briefly explaining about hammer drill and rotary hammer.



Note: The clip shows Bosch Bulldog Extreme, Bosch GBH3-28 and Makita HR2811F. HR2811F is a HR2810 with shock absorber and work light. HR2811F/FT is not available for Malaysian market, but it's OK, because, HR2810 is surely much cheaper.

Yup, agreed. Here, around Balakong and Jalan Reko (Kajang), there are several 'grand' hardware shops, which have EVERYTHING to build a house.

Sure, I'll post the hardware shops name later.

Wondering how our local builders do the bathroom fittings.... The holes on 'soft' tiles are not smooth and sometime it's just ugly. I can drill holes better and neat than that. Yeah, they did sloppy jobs due to time constraint, in addition to working with very limited tools/resources.

Congratulation.... another rotary hammer's club member. ... Any model/brand of rotary hammer users are welcomed too. TT session? Hope we can bring along a concrete block for us to 'lepas gian' and learn proper way to use the power tool.



There is a feature/function called 'No Hammering When Idling", which make less vibrations and make the hammering mechanism long lasting. The hammering will starts when to push the drill bits to the target. Even you start hammering, the vibration of the rotary hammer is still low and comfortable.

BTW, this weekend, I drilled 9 holes into the wall, for hanging pictures and a mirror. . Actually, preparing tasks took more time than drilling, where the drilling each holes only took several seconds, but preparing and packing took more than 1 hour 30 minutes totally.

This post has been edited by bahathir: Oct 30 2011, 10:38 PM

Great to see and read some more reviews/experiences here.

Quieter? Yeah... but, it's still sound good, just like.mmm... yeah the minigun



BTW, for hole drilling, it just took less than 10 seconds, compared to more than 30 seconds of whining and screeching sound of the impact drill, and I prefer the minigun's likes sound of rotary hammer.

After finish using it, make a practice to wipe off the dust and clean it before store it. Also, put a small amount of grease at the driil/chise/bulpoint bit's grooves before inserting it to the chuck. I already have my rotary hammer for 6 months, and it is like new, even after making about 100 of holes in concrete.

Aaa.. you felt the same, that,we are not going back for the impact drill. 12mm ? It is still a small hole, compared to the H2470's full potential, handling up to 24mm masonry drill bits. In my case, most of the time, I only use 1/2 of the my rotary hammer for more controllable drilling jobs. At full power I need to add more pushing force to keep the rotary hammer from 'bouncing'.

Durability: Since most of the readers here are DIYers, and some of us have very tight budget, buying a good and cheap rotary hammer always a priority. Remember we are not making hundreds of holes EVERYDAY, , then a mid range priced rotary hammer is always a good choice. This is why I bought Makita HR2810. There are several other brands, such as Hitachi, Hilti and Dewalt which are also a good brand too. Don't forget that, rotary hammer has to be built to last. and not being destroyed while destrying/demolishing building into dust.

Last week, I used the rotary hammer + bulllpoint bit to break and remove some stones, bricks and dried cement in my lawn yard. Yeah, my lawn yard is like a waste//leftover dump site underneath the soil. I also use it to loosen up the soil to make digging much easier.

Ok, I did another experiment using roraty hammer.
How fast to drill a hole into a WOOD using rotary hammer + masonry drill bit, compared to an impact driver using auger/wood bit? Hint: Ignore the result quality.

Thank you.

This post has been edited by bahathir: Nov 15 2011, 02:05 PM

Since the tree's root already made the bump, IMHO, it is not that difficult to remove the stones. Road is made from a stones glued together by tar, and I don't see any problem to remove it with chisel or bullpoint. Take a try, and report it back here.

Or, how about using 9" grinder with stone/masonry cutting wheel, this might can to the trick.

This post has been edited by bahathir: Nov 15 2011, 02:08 PM

24mm for DIY use? wow, unless you are a plumber or a builder. The price also depends on the bit's length, material and technoogy. Mmm... I think you can get a cap ayam 24mm for around MYR50 or less (I might be wrong) ... If you use 24mm often, get the Zentro or 4 cutters type bits, for durability and better drilling performance.

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Added on November 15, 2011, 2:39 pmAiya... borrow it from someone la... Just for cutting the road. 4" might be too shallow for this purpose.

This post has been edited by bahathir: Nov 15 2011, 02:41 PM

The Bosch 4 cutter's drill bits such as the X5L serie use full head carbide tip, which is very tough and can drill through a rebar steel in concrete, and also long lasting. That's why the drill bit is very expensive.

Most of the hw shops have some drill bits, up to 32mm...or you can order one from them.

You can find the HR2470 price in this thread...more or less than MYR500.

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Added on November 17, 2011, 1:03 pmWant to know more or want to service your Makita HR2470 by yourself ?
http://www.makita.nl/images/files/onderdel...l/HR2470-TE.pdf

HR2470 Part Brealk Down.
http://www.makitavn.com/upload/pdf/tools/HR2470.pdf

HR2470: Marketing Material
http://www.makita.com/en-us/Assets/Media/M...f7da8724299.pdf

This post has been edited by bahathir: Nov 17 2011, 04:12 PM

I found that Bosch model, GBH 2-23 REA somewhere around Balakong, Serdang and Bangi, but I forgot which hw shop. It cost around over MYR800. In my case, I asked my son to hold vacuum cleaner near the location where I want to drill, which IMHO, has more sucking power (1500W) But, lecech sikit, because neead helpers to hold it.

Or try this tip.



This post has been edited by bahathir: Nov 21 2011, 02:13 PM

Makita rotary hammers have 2 type of chucks.
1) Fixed SDS+ chuck. You need to get optiional sds+ drill chuck if you want to use normal round shank drill bits. I bought the keyless chuck from China, but, the sds dapater's shaft is a bit bent, and it wobbles a lot during operation.

2) Quick Chuck, the modles HR-xxxxT, which ends with T, have Quick keyless Chuck, simlair to Bosch DFR series. These Makita models are NOT available for Malaysia market. The quick change drill chuck is more precise and easier to use.

Example Makita HR2811FT



Is is adviseable to NOT use the standard drill chuck for 'hameer or rotar hammering', because it might damaged due to frequent enormous impac from the rotary hammer's striker. If you want to drill a wood, get an SDS+ auger bits which are available at most hw stores.

TQ.

This post has been edited by bahathir: Nov 22 2011, 03:45 PM

I not sure how it performs, but based on handling it at Living Depot@Bangi some months ago; it is lightweight multi purpose rotary hammer. SKIL brand is being in the industry for years, I am quite sure it is enough for normal DIY purpose, such as drilling hole in concrete up to 20mm. The price is very attractive and you may get severall SDS bits, drill chuck and several standard bits. Also, the build is much better than generic China made rotary hammers.

Typically, you only need 6mm masonry drill bit for MOST of the anchoring or fixing purpose.

If you got it, please do give your view here, as reference for others.

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Added on November 23, 2011, 10:17 amCheck this SKIL 1715 youtube clip and evaluate yourself.


This post has been edited by bahathir: Nov 23 2011, 10:56 AM

Yeah... I wish I able to join them to 'demolish' the floor, just for fun or 'lepas gian'

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Added on November 23, 2011, 10:47 amBTW, if anyone find any interesting rotary hammer related video clips, please share it in this thread.

This post has been edited by bahathir: Nov 23 2011, 10:47 AM

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. :


Impact Driver : Makita TD-010F
100Nm torque; 230 W

230 W vs 800 W of the HR2810 rotary hammer... But, wood is quite a touch material to drill . Compared to my previous clip, rotary hammer + 12 mm masonry bit can drill into concrete block in 4 seconds... but it took longer with wood.


Thank you.

Note: A new addition to my DIY tools.... the Black and Decker's Workmate 225, workbench... and.... Makita GA4030 grinder..

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Added on December 2, 2011, 3:19 pmThe higher impact energy (3.5J) is more suitable for demolition or bigger bit's size usage. But, it will be much bigger and heavier, (5kg and above), and of course, more EXPENSIVE. Depends on your usage, the bigger rotary hammer may suit the purpose. Planned it carefully before buying it.

This post has been edited by bahathir: Dec 2 2011, 03:44 PM

That is NOT a SDS rotary hammer. It is just a typical percusion impact drill, and performe just like any impact drill.

It was in Rotary+Hammer mode, just what I pointed at in the clip. Yup, it may sound like scooter, because, rotary hammer uses piston to compress air and push the 'striker' to push the drill bit. In other word, it works similar to typical 2 or 4 stroke engine. Since I drilled into wood, the metal to metal (striker - bit) collision's sound; the 'kaching, kaching' sound is lesser compared to when drilling into concrete, because striker hits the bit much softer and being absorbed by the wood's fiber.

Here is a diagram of L shaped rotary hammer. In this case, Makita HR4000C. Look at the piston and cylinder and how similar to typical engine.



Here is my new 'family' picture.



This post has been edited by bahathir: Dec 3 2011, 09:32 PM

Just found another rotary hammer's review. The model in this clip is Makita HR2811F, which is same as HR2810, but with shock absover and worklight LED. Unfortunately,this model is not available in Malaysia. Yeah, the few extra features also make it more expensive and not competitive in our market. I realized that the rotary hammer looks 'SMALL' in western people's hand.



Here we can see how the rotary hmmer with 'hammer only' mode being used for demolition and even 8 year's old kid also can handle it... mmm... I am thinking to train my 10 and 11 years old sons to do the drilling for me heh eh he.


Here is another review for Bosch RH328VC which is one of the GBH3-28 series.




This post has been edited by bahathir: Dec 4 2011, 12:48 PM

Wow, 1/2 of the kicthen's top... Wow... it seem that you are HATED it a lot. he heh eh ... Glad the rotary hammer suit the purpose to channel your 'anger' to a good purpose. heh eh he e...

Yes, HR2470 or any 'big' professional grade rotary hammer. is very capable to bring concrete house down to dust!!. Use the it's 'power' wisely for peace and harmony.

This post has been edited by bahathir: Dec 6 2011, 11:32 AM

Great tip. Thank you. The holes make the concrete weaker and you also have the points where you can start the chiselling/demotion.

Waa.. your contractor seem to be had a hard time, working with the rotary hammer's owner like you. heh eh he he... Now, you can show them who is the MASTER.

This post has been edited by bahathir: Dec 6 2011, 02:09 PM