Show drill bit head.

This post has been edited by mini orchard: May 24 2021, 01:09 PM

Exactly what I meant.
This toy is like plastic hammer beating at 30k or 40k per minute.

Floor slab is poured concrete but from the hole pic u havent gone deep enough to worry about rebar.

Buy extra drill bits. If drill bits hot it will not go through. I have 5 drill bits standby. If less dust produce I change bits. Will have this problem with concrete wall. Ask the hardware guys for the good one. Last longer.

This post has been edited by Noryume: May 24 2021, 01:57 PM

Heat generated also proportional to runtime so you could be right. But any decent *branded* bit for wall plug 5.5/6mm should be able to make 30 holes easily. And these are just normal masonry SDS bits..ie the lowest range (not the fancier ones)

Using new BD drill set, masonry 6mm

Try this ...

Same applies for RC pillar?

My drill ... for column and beam



This post has been edited by mini orchard: May 24 2021, 03:24 PM

Brick wall you can get that many holes. But my experience for concrete, two holes only. This one using just the normal borch drill set. Now have rotary no more headache.

My rumaweep using concrete (RC wall) hence thats why using rotary hammer. Using hitachi SDS bits (valued at Rm2); as it came in a 5-for-9.90 set. I have spares but hardly wear out even went to 2nd bit even when drilling customer place for curtain rails, easily 20 plus holes for 1 unit.

It also depend on right tool for right job I guess. I dont think my wall plug bit (SDS 5.5mm) even exceed 10min total runtime for 30 holes.

This post has been edited by ceo684: May 24 2021, 04:34 PM

for tungsten carbide tip even the cheapo one does extremely well.......so far i havent encounter shitty ones.

only thing to watch out for is the tolerance of the sds part. the bad one may have bad tolerance or get stuck in the chuck.

No wonder using rotary. I just bought rotary last year. So not many experience with it just drill 3 holes . But easily to drill concrete. Last time using normal hammer drill for concrete have to stand by a few drill bit to change when it get hot. If not waste a lot of time to drill many holes.

Technical correction:
The spec on the drill is how big (diameter) u can drill.
The length (how deep u drill) is determined by length of the bit, so it will not be shown on the drill (ie. irrelevant).
A short 6mm hole and a longer 6mm hole - to the drill - is the same effort because it's drilling the same cross-section area all the time.

RC wall, pillar, floor slab janji RC it is highly recommended to just use a rotary hammer, coz when material (concrete) says you need to fight Mike Tyson u need a professional-level boxer to do it well.
Using impact drill, well no-one stopping untrained people to go 1-on-1 with Mike Tyson but most likely end up "not so successful"

U can experiment taking on Tyson as an untrained boxer..it will be a long drilling effort and u have to press it in, whole arm will shake from holding it in 10mins per hole, if kena hard stone its just impossible without wearing out the impact drill (rotary punch using air piston, impact drill still metal on metal inside the machine)

This post has been edited by ceo684: May 24 2021, 07:37 PM

Mine rumawip as well



I think I can borrow one Bosch BGH 2-26 DFR, which drill bill should I use ya.

Can I still use the 6mm masonry drill bit ?

Buy a branded* SDS Plus bit for less risk. (If that thing break and you not wearing PPE..it can hurt you bad)
There is a reason why the drill bit is slotted for SDS. U cannot use round shank bit with impact mode on the rotary. You will just damage the chuck adapter.

*Branded meaning not the no-name stuff..u can get bits from those power tool makers, even their low end SDS bits also more than enough for home use.

Hitachi 6mm SDS+ https://shopee.com.my/Hikoki-(Hitachi)-SDS-...8386.3245113792
Bosch 6mm SDS+ https://shopee.com.my/CEO-🇲🇾-BOSCH-DR...5456.6022946069

Actually the person whom u borrow the 2-26 rotary from would likely have the bit in their collection already.

This post has been edited by ceo684: May 24 2021, 07:54 PM

mane dapat?? cari kat shopee tapi tak jumpa...

Dulu this guy sell too cheap now he jack up edi
https://s.lazada.com.my/s.219Cd




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Still can't drill using Bosch rotary. Did I do anything wrong ?

Try to start from small to big drill bit.

If you cannot drill though with rotary drill, you may hit into rebar in the concrete.
Please choose another drilling spot.