help - my drill is slipping !!

[mick7]

Trying to drill a 6mm hole into Porc. wall tiles. Awkward position. 365 drill bit but yellow template and drill bit slipping. Cant even get start on the tile. Driving me mad !!!!!

 

[DHTiling]

are you using water mick as you drill..?....and how many holes have you drilled already with that bit.....?

 

[Lee Carr@RUBI]

if you use a minigres drill kit from rubi this comes with a guide and stops the drill slipping

 

[mick7]

Hi Dave

I've done 4 - miracle. Only 9mm tiles . The problem is the Bosch hand battery drill is heavy to support, you must have to have big hands for that yellow template. I am holding a sponge under the drill but also trying to support it and apply some pressure or it takes all day. Definitely not a fan of these yet ! Help!!!!

 

[DHTiling]

A little tip from me mick......Use a strong gaffer type tape to hold the template in situ....then you have one hand free to spray water on the bit to keep it cool whilst drilling.....4 holes can blunt one of those bits if drilling very hard porcelain tiles and not enough water......good luck...

 

[bootsmckiber]

How old is your drill?Maybe the inside of your chuck is stripped or worn down,Try wrapping some tin foil around your bit then retighten,drill slow not fast,if this works temporarily I think your going to be needing a new drill,good luck,
Mike

 

[mick7]

That sounds good I'll try it. Totally exhaused putting up fiitings, I thought 365 would be a piece of cake. I was soooo wrong .....

 

[CJ]

Not had ANY problems with my set.

Then again.........not tried Porcelain yet :whatchutalkingabout

 

[grumpygrouter]

I have drilled loads of times into porcelain with these drills. Why don't you try "starting off" with a dry drill just to get your initial groove going. once you have that you don't need the guide. Also you only need to keep the drill cool, not continuously in water. I just stop drilling every 15 sec or so and dip it in water, I have not had any problems doing so.

Grumpy

 

[mick7]

Thanks for reply.

When you say start off with a dry drill, do you mean one with just a normal tile bit? On ceramics I normally just use a bit of masking tape and masonary drills just fly though them. I am using the drill at a moderate speed, not too slow as it would take all day, also use a fair bit of pressure. My hand drill is new so thats not the problem.
It has done the job,very hard work, I'm just not looking fwd to doing any more. 4 holes per bit?

 

[faithhealer]

Don't use pressure Mick let the drill do the work not you. Love my set so don't give up on them yet. I position the jig, chuck water at it , then hold the jig and drill. As above, once you have the groove lose the jig.

 

[mick7]

The only problem is if I dont apply a bit of pressure, nothing much happens or it takes forever. I am using the 6mm bits at the moment as I only need small holes, i even bent one !! They just dont seem strong enough. I wonder if I would be better using the 8mm ??

 

[faithhealer]

Keep trying mick. Another tip if you are using rawlplugs, make the plugs fit into the concrete/wall and make the hole in the tile a bit bigger so when the screw expands the plug there is no pressure on the tile therefore less chance of cracking the tile.

 

[Deleted member 1779]

Hi for best results follow the online picture sequence

Press (and hold) the plate onto the tile. The more you push the more it grips.

Dry drill for a few seconds (dry) to start the hole.

DO NOT PUSH TOO HARD OR APPLY PRESSURE

A little pit will form. You can now discard the plate and begin to use water.

Grab a wet sponge. Hold it under the drill and cool it as you drill.

8mm is better than 6mm

 

[mick7]

Hi
Many thanks for reply. Following our discussion at KBB, I've stopped using the 6mm ( PMd you re:these) and now using the 8mm which are certainly better.
Cheers.

 

[Deleted member 1779]

Yes its this sort of feedback that helps us refine the product range.

My personal view is that the 6mm is not as robust at the 8mm when used on very hard material like granite and porcelain. 8mm wins simply because there is more guts to the drill and more diamond.

As a retailer I have a conflict. The market demands 6mm so of course we have to supply the best that we can.

The 6mm actually work really really well on glass, marble, travertine etc so there is a market for 6mm. I am looking at the BFKMX and removing 6mm but everytime we do that about 50% of our survey say to keep it in.

The jury is out on 6mm when used on tough porcelain. For now it stays as part of the BFKMX kits. I have put a comment on the website to say that we recommend the 8mm where possible.

If customers do use 6mm please bear in mind the advice not to apply pressure to the tips. And yes there is a mild chance of bending the 6mm as it pushes out of the back of the tile and gets caught. The 8mm is too strong to bend.

Thanks for approaching us on stand. We take the views of customers seriously. These next few months are important ones for us as we finally bring the kits to the retail market.

 

[lendini]

top tip which i discovered after having the same problem.Start drilling with the 365 guide and hole cutter dry to get initial pit.Then use water,if you use before the plate will not hold to tile (also make sure the grips are the right way round facing tile)

 

[Deleted member 1779]

Drilling multiple holes should be a doddle.

A bit of dry drilling (for a few seconds to get a pit formed) wont kill it. Just get it into a bucket of water to cool of as quick as you can after 8 seconds of drilling.

Dry drilling to start off wont kill it provided you dont drill for more than 8 seconds.

If the drill plate itself is dry it will grip much better. However even on wet tiles it still grips. The more you push it, the more it grips!

 

[Dan]

Don't mind me while I bump up some of the old threads. I wont be doing this much more. Just the last few in the Tile Drilling forum - How to Drill Porcelain Tiles. Just one of the many tiling advice forums.