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+--- Thread: cutting a 1 1/8" hole in plastic (/showthread.php?tid=260595)
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cutting a 1 1/8" hole in plastic - Fritz - 10-11-2021
put a BT/USB module on the back end of our '05 Accord radio.
needs a USB extension.
It takes a 1 1/8" hole.
Not gonna drop $25 on a one time use bit.
Besides the fact that 1 1/8" is a 1/2" chuck. I have 1/4".
I was thinking draw the hole and use an 1/8" or so bit to cut the circle out. It's the "storage" bin in the center. Not very thick. < 1/4".
Other ideas?
Re: cutting a 1 1/8" hole in plastic - cbelt3 - 10-11-2021
I used a soldering iron to do the same thing to my '02 Civic. Plastic melts handily. If you don't have a soldering iron you can hold a nail in a pair of pliers and heat it up with a butane lighter (or a torch, better)..
I will say that having a cheap set of hole saws (harbor freight) is handy.
Re: cutting a 1 1/8" hole in plastic - bazookaman - 10-11-2021
Re: cutting a 1 1/8" hole in plastic - Fritz - 10-11-2021
yea, solder iron might make it faster even if it ruins the tip.
I'm sure I'm due for a new tip.
Even the cheapies HF hole saw sets are $25
Left my laser beams in my other pants.
Re: cutting a 1 1/8" hole in plastic - cbelt3 - 10-11-2021
It won't ruin the tip. Just wipe it while hot on some steel wool or a metal scrubbing pad. Or let it cool and just cut the plastic off with a knife.
https://www.harborfreight.com/34-in-5-in-carbon-steel-hole-saw-set-18-pc-68115.html
Re: cutting a 1 1/8" hole in plastic - Fritz - 10-11-2021
oooo, those look alright!
Re: cutting a 1 1/8" hole in plastic - testcase - 10-11-2021
Do you have a Dremel tool? Or a circular rasp?
Re: cutting a 1 1/8" hole in plastic - Fritz - 10-11-2021
neither. Stanley knife. wallboard saw.
Re: cutting a 1 1/8" hole in plastic - apocketfulofwry - 10-11-2021
Cut a square hole with the mat knife?
You could use a drill bit to round the corners first if you want it prettier.
Re: cutting a 1 1/8" hole in plastic - Gareth - 10-11-2021
It will take seconds to cut the correct hole with the Harbor Freight hole saw set vs minutes or more of potential aggravation and risk of damaging other trim using another method.
Or, if you don't have a convenient HF, get a proper sized hole saw for $14 from Home Depot: https://www.homedepot.com/p/Milwaukee-1-1-8-in-Hole-Dozer-Bi-Metal-Hole-Saw-with-3-8-in-Arbor-Pilot-Bit-49-56-9663/202327733?MERCH=REC-_-searchViewed-_-NA-_-202327733-_-N&
(Unless your drill literally only takes 1/4 quick change bits? I didn't know they made drills with 1/4" chucks, I thought 3/8" was the smallest chuck size).