Long drill making success!

You obviously need a drill that drills round corners, not many of those about!

Brian

Can you make it in sections, so you drill a bit then add an extension on, then repeat ...?

repeat ...?

Oh it's long enough, it just can't do the impossible, namely change direction as I drill.

I thought I could get away with drilling two oblique holes and hopefully get them to meet in the middle. It now seems that the geometry of the available space just won't allow that.

Tim

then repeat ...?

Not even with the added advantage of a rotating rasp on the shaft? I must note that trick for future reference.

Colin Bignell

Could you drill two non-aligned holes through each joist then use something like a Magnamole ("as seen on Dragon's Den") to get the cable through?

Either buy one (eg

A picture or diagram and maybe someone will have a clever solution.

Mind if we stick this on wiki?

NT

Yup getting the drill in the right place can be the hardest place. Normally if I need to drill through several joists I find I need to get the drill into the space between one set:

Not at all. Want any more pictures?

Tim

NT

Yes, last time I needed to drill a really long hole, I thought I'd sorted it by getting a 4-ft drill bit - and then realised that to insert the damn thing I'd need to knock a hole in the wall and dangle from skyhooks outside.

JGH

My original description was

As you only want to drill wood: Take a long piece of carbon steel rather smaller than the diameter you want. Heat one end and flatten equally from both sides (e.g hammer and anvil) until wider than the hole you want. Grind to a V-tip of the correct diameter. Back off the edges of the V tip to form a cutting edge. Harden and temper. You now have as long a drill as you want.

Colin Bignell

Yes, sounds like a whole nother article to me though

NT