"Andrew Mawson" wrote in message
...

"IMM" wrote in message
...

"Andrew Mawson" wrote in message
...
Problem today drilling holes through a rafter / joist combination for
coach
bolts - needed to drill 36 holes and couldn't get the ordinary drill
into
the joist space at the right angle - ok go buy a cheap angle drill -
look
at
Screwfix - only expensive battery ones that probably aren't powerful
enough
anyway. Got one of those nasty 90 deg gear boxes but they spin all
over
the
place and run horribly hot.

Improvised Solution: Standard Bosh angle grinder has a 14mm male
stud -
ex
old drill chuck has a 3/8" UNF male stud. Made an adaptor out of 35mm
of
3/4" hex steel bar with a 14mm female thread at one and and a 3/8 UNF
female
thread at the other - screw it all together and we have a (rather
fast)
angle drill at zero cost. Drills 10 mm holes nice and square to the
joists -
problem solved! OK it runs far too fast really but got the job done,
and
to
think I've struggled all these years under floors drilling slightly
angled
holes for cable runs that you can never pull through in long lengths
due
the
the angles and I had a disguised angle drill in the tool box all the
time!

Did you have to thread the steel bar? How much is the cheapest Bosch
angle
drill? Where do you get, and how much is a speed controller? I haven'
seen
one of those for years.

Bosch angle grinder in toool box for last 7 years - no idea of price
Threading of hex bar simple job on lathe - took 10 minutes as I have the
appropriate tooling

So if I go to a local machine shop, they will charge me £20 to do it, then I
have to buy then Bosch angle grinder, then the mains speed controller. And
it is not guaranteed to work either. The chuck could spin off causing
injury. All ads up. A search on Goggle gives £112 for a mains angle
drill. Rip off I know. The Royobi twin drill pack with an angle drill,
then looks excellent value for money.