What size hole saw to use?

[Kyle.malone]

I have a blank dash (fiberglass) and will be gettting my gauges in tomorrow and would like to get the gauges installed this weekend. I have gone to Lowe's and a couple other stores and they do not carry a 2 1/16" or a 3 3/8" hole saw. They can order them, but will not be in until after the 10th of the month. I think I can use a 2" hole and sand the hole to get the smaller gauges in, but what should i use for the 3 3/8" hole? Any ideas or what have you done.

 

[broncodriver99]

All of the hole saws I have ever used tend to cut a hole bigger than advertised. You may be better off going a little smaller and sanding or using a Dremel tool to get your final dimension. Did they have a 3 1/4" hole saw?

You could always use a jigsaw. Just put some painters tape over the dash so you don't scratch it up. Actually being fiberglass you should tape it no matter how you cut it otherwise it will splinter on you.

 

[krisbassett]

You could also use a Rotozip with the circle cutter on it.

 

[tortuga]

I used a circle cutter for my aluminum dash. You will spend a bundle on hole saws for different sized guages and probably get a lousy fit. Might want to look into a roto-zip or something like it with a circle cutter attachment.

 

[scbronco]

if you do choose to 'sand/file out' to get your fit, you will want to pre mark the outside diameter of each whole to make sure the center and the OD of each one stays on an even plane. if not you will end up with a really odd placement pattern...

 

[Kyle.malone]

if you do choose to 'sand/file out' to get your fit, you will want to pre mark the outside diameter of each whole to make sure the center and the OD of each one stays on an even plane. if not you will end up with a really odd placement pattern...

Good tip.. Don't want them looking off. I will go check out the rotozip circle cutter tomorrow. Thanks.

 

[broncodriver99]

Dremel makes a circle cutter attachment as well. If you already have a Dremel.