Li q

[focalcivic]

Does anyone know off the top of their head what is the best bit size to drill a hole for the on/off switch.

[bradthemad]

For the round rocker switch that comes with the LI, I used a 3/4" hole-saw bit, and added a notch for the key with a small file. Worked perfectly on the piece of ABS plastic where I put the switch. The hole-saw had something like a 1/4" pilot, for which I pre-drilled a hole.

[focalcivic]

For the round rocker switch that comes with the LI, I used a 3/4" hole-saw bit, and added a notch for the key with a small file. Worked perfectly on the piece of ABS plastic where I put the switch. The hole-saw had something like a 1/4" pilot, for which I pre-drilled a hole.

Thank you, a 3/4 is not too large? Also what is a notch for the key?

[TSi+WRX]

^ Nice.

The reason why I couldn't help answer, focal, is that I free-handed it. From my past hobbies, I'm pretty decent at using a Dremel, and I tend to free-hand these things.

[bradthemad]

I measured the switch first with a ruler and it looked like 3/4", so that's what I used, and the fit is perfect. The tricky part was getting the white plug for the LI wiring harness through that hole, it's a tight squeeze.

If you look closely at the back of the switch, you'll see that there is a plastic key or tab at 3 o'clock that fits into a notch to keep the switch from spinning around in the hole.

[PMoth]

I use a "unibit" or "stepbit for these tasks. You can pick them up at home depot or sears. I own two sizes, .5 in and .75 in. I do believe the hole I drilled was slightly less than .75 in for a nice pressure fit. Unibits are nice because you can drill through wood, plastics, sheet metals, and other non-super dense material. Just incase your wondering what I'm talking about, it's bit that looks like a really tiny Christmas tree or cone. It drills perfect holes in steps.

[focalcivic]

I use a "unibit" or "stepbit for these tasks. You can pick them up at home depot or sears. I own two sizes, .5 in and .75 in. I do believe the hole I drilled was slightly less than .75 in for a nice pressure fit. Unibits are nice because you can drill through wood, plastics, sheet metals, and other non-super dense material. Just incase your wondering what I'm talking about, it's bit that looks like a really tiny Christmas tree or cone. It drills perfect holes in steps.

Yes, I was thinking the same thing, how much do they go for? And the one you are referring to goes up to .75?

I just looked them up they can be expensive.

Ok My math sucks, what size would be a hair smaller than 3/4 to play it safe, 5/8?

Also, could I use a spade bit, or that is more for wood?

[g-zona]

The exact measure is 20mm in diameter. Sorry, metric only

[focalcivic]

The exact measure is 20mm in diameter. Sorry, metric only

That 20mm is for the inner diameter, not the outer bezel right?

That helps I did a conversion and 20mm equals .78 inch, so them a 3/4 inch hole saw or bit would work.

[g-zona]

That 20mm is for the inner diameter, not the outer bezel right?

That helps I did a conversion and 20mm equals .78 inch, so them a 3/4 inch hole saw or bit would work.

Correct. It would be a diameter of the hole...