5 x TB Loops - poss bargain

[Sporky_McGuffin]

I think that would be rather tight.

[timmyo]

I think that would be rather tight.

shall we just put it in the box I gave you for now ? If I decide to try and get clever I can have a stab at it later (I'm hoping to have snagged a cheap pillar drill by next week so I can drill my own enlosures).

Remind me again about stepped drill bits : was it 13mm you said I should find one that does ? Many seem to have 2mm steps in even increments . . .

[Sporky_McGuffin]

Yeah; 13mm is nice for DC sockets. I had a Unibit that notionally went up to 12mm, but if you ran it all the way through it made it a bit bigger still.

Otherwise a 12mm step drill and a reamer or a cone drill. I use both - cone drill if I remember before painting, hand reamer otherwise.

[timmyo]

Yeah; 13mm is nice for DC sockets. I had a Unibit that notionally went up to 12mm, but if you ran it all the way through it made it a bit bigger still.

Otherwise a 12mm step drill and a reamer or a cone drill. I use both - cone drill if I remember before painting, hand reamer otherwise.

aha : http://www.thesitebox.com/Category/4...ep-cutter.aspx

10->20 or 3->14 most useful ?

[timmyo]

aha : http://www.thesitebox.com/Category/4...ep-cutter.aspx

10->20 or 3->14 most useful ?

scratch that - there's a 6-20 in 1mm incrments

**edit which appears to be an error on the page its 10-20 **

[Sporky_McGuffin]

The 3-14 is a cone drill, so will be a pain for most things - you'll have to guess if you've got it right. 10mm is too big for the smallest hole.

From there I'd suggest:

MC 1m High Speed Steel Step Drill 4mm To 12mm

and

XT314 High Speed Steel Taper Drill 3 To 14mm

So the step drill for most things - you'll be able to count the steps to know how big a hole you've made (fer instance, on my step drill it's 4 steps for a mini pot, 5 for an LED, 7 for a normal jack, 8 for an isolated jack and all the way through for a footswitch. Then the cone for opening out DC jack holes.

[timmyo]

ta