In article , Trevor Wilson
writes

"tony sayer" wrote in message
...
Hole punches for transformers? Like, big square shapes?


No, but nothing to stop you using them for 'starter holes' is there???

Tell you what is useful for odd shaped and even regular shaped holes in
ally is using a router designed for wood use!. I have a cheap trend one
for some 30 quid and some cheap bits for same. There is a very small dia
bit that has lasted very well cutting all manner of shapes in 16 SWG
ally sheet. Even if you waste a few, their quite cheap from the DIY
sheds and do work very well...

**I'd never thought of using a router for aluminium, but, given that I
regularly cut aluminium with my TCT blade compound mitre saw, I guess it
should be OK. I would suggest that some lubricant might be a smart idea
though. Aluminium tends to stick to blades.



Oh yes, I do, squirt a drop of oil on it but it spins so bloody fast I
think the oil doesn't get a chance. I believe your supposed to do it
slower but like drilling in masonry the faster the drill the better it
seems to work. TCT blades do cut ally very well and jigsaws with the
RIGHT blade in them are very good too.

Theres a maintenance works down the road who are due to close before
long. I've got first refusal of their Edward's Trucut guillotine and
bending/folding machine!..

Better start thinking about making a valve amp
--
Tony Sayer