how to drill a 2 1/16 inch hole in plastic?
Member
Joined: Apr 2001
Posts: 482
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From: UTAH
Car: 1982 Z28 & 1967 RS & 2002 Z28
Engine: 388 ci SB / 454 ci BB / LS1
Transmission: 4 speed / TH350 / T56
Axle/Gears: '91 "1LE" rear, posi w/ 3.23's
You need a hole saw, NOT a drill "bit" , local harware store, tool store, etc. etc. I;d buy a 2" and ten file fit the 1/16, or if you are good with a drill get a 2 1/16" but be steady......... 
Supreme Member
Joined: Jul 1999
Posts: 1,817
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From: Plano, TX
Car: 1992 RS
Engine: 406 Stealth Ram
Transmission: 700R4
I bet an almighty dremel would work too. Trace the circle out, then take a plastic cutting bit (I'm sure they have one for it), and cut that puppy out.
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From: Tampa, FL, USA
Car: 93 240SX
Engine: LQ9
Transmission: T56
Axle/Gears: 3.54 R200 IRS
Hole saw, little at a time so you dont heat the piece up a lot, high speed, tiny bit at a time, let it cool.
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iTrader: (5)
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
i went to the hardware store and bought a 2 5/8" hole saw for my gauges and just went slow on drilling out plastic and it came out a little rough but the bezel on the gauge is slightly larger so you'll never see the rough stuff anyways. Hope this helps.
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