jabbahutt
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 posted on 22/10/07 at 01:49 PM |
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drilling blind holes
Any tips for drilling blind holes in 9mm MDF as a starter for screws.
I don't want to go straight through by mistake and I'm a complete numpty with a drill, so any tips to make things easier are
appreciated.
Thanks
Nigel
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Confused but excited.
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| posted on 22/10/07 at 01:51 PM |
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1)Use a bit of insulting tape on the drill bit as a depth guide.
2) Use a drill bit designed for the job, with a built in countersink.
3) Only leave enough of the bit sticking out of the chuck to drill to the depth you want.
HTH
Forget 2 just remembered it's 9mm thick.
[Edited on 22/10/07 by Confused but excited.]
Tell them about the bent treacle edges!
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mookaloid
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| posted on 22/10/07 at 02:10 PM |
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A bit of broom handle cut to length and drilled through the middle so that the drill bit pokes out by the required amount when placed over the drill
bit. 
Cheers
Mark
"That thing you're thinking - it wont be that."
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DarrenW
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| posted on 22/10/07 at 02:13 PM |
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Depends what you are trying to do.
Insulating tape works for me. Just be careful though cos if the bit bites at full revs it will pull through.
Other option is to drill through with the clearance drill and finish with c'sunk bit so screw head is flush or just below surface. I sometimes
drill through with small dia drill about the size of the screw shank laeving some meat on for the screw threads to still bite in (prevents
splitting).
Some electric drills have a depth stop bar.
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DarrenW
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| posted on 22/10/07 at 02:15 PM |
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quote:
Originally posted by mookaloid
A bit of broom handle cut to length and drilled through the middle so that the drill bit pokes out by the required amount when placed over the drill
bit.
Cheers
Mark
Great tip but be careful to choose a redundant broom. Wouldnt want to nark the Witch would we, especially at this time of year
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designer
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| posted on 22/10/07 at 02:22 PM |
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Use a piece of rubber hose as the depth stop; doesn't harm anything on contact.
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nick205
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| posted on 22/10/07 at 02:37 PM |
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Get down to Machine Mart and buy a cheapie Clarke pillar drill for £35. It's not great, but it makes drilling so much easier. Holes will be
perpendicular/square, cleaner and the drill has an adjustable depth stop for accurate repeatable holes.
Probably one of the best tools I bought whilst building.
Nick
PS - I haven't forgotten about alternator wiring, bonnet's off for a look tonight 
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Marlon
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| posted on 22/10/07 at 04:32 PM |
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Same idea as the rubber hose/broom handle. but I just slip a few m6 / 8 nuts over the bit as a stop if I am not wanting to go too deep.
john.
Band Anyone?
Linky to SWMBO 's band
Linky to Brother in laws band
MKoc 1081
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martyn_16v
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| posted on 22/10/07 at 07:31 PM |
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quote:
Originally posted by DarrenW
Wouldnt want to nark the Witch would we, especially at this time of year
My Mrs: What are you chuckling at?
Me: Oh nothing dear...
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Alex B
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| posted on 22/10/07 at 09:43 PM |
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Many years ago a guy was asked was there any low points during his Seven build........"yeah when I drilled a hole through my hand" he
replied
Alex
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mr henderson
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| posted on 23/10/07 at 07:16 AM |
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quote:
Originally posted by nick205
Get down to Machine Mart and buy a cheapie Clarke pillar drill for £35. It's not great, but it makes drilling so much easier. Holes will be
perpendicular/square, cleaner and the drill has an adjustable depth stop for accurate repeatable holes.
Probably one of the best tools I bought whilst building.
Total agreement. A pillar drill is invalauble especialy when doing metal work. Drilling in steel is so much easier and quicker .
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