Drilling Plexi

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TrueJedi
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Drilling Plexi

Postby TrueJedi » Thu Jun 15, 2017 7:42 pm

I understand when drilling Plexi you should attach the plexi to a piece of wood and use a lower RPM. But can you use a normal drill bit? I see there is plastic drill bits, but they don't seem to be very common.

Thanks
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Re: Drilling Plexi

Postby Alienagent » Thu Jun 15, 2017 8:46 pm

Use a drill bit designed for steel. low pressure, low RPM.

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Re: Drilling Plexi

Postby jasonec » Thu Jun 15, 2017 8:54 pm

Also make sure you apply profanity where necessary. It helps.
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Re: Drilling Plexi

Postby scoltx » Thu Jun 15, 2017 9:16 pm

I prefer lexan (polycarbonate) over plexi (acrylic). Lexan works much better with woodworking tools and less prone to cracking when drilling or cutting. It scratches easier than plexi though.

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Re: Drilling Plexi

Postby DarkSiege » Thu Jun 15, 2017 9:45 pm

I use stepped bits, i find i have more luck with them.

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Re: Drilling Plexi

Postby tekkaraiden » Fri Jun 16, 2017 6:04 am

I've had luck with rounding the corners off a drill bit and then drilling the plexi slowly.

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Re: Drilling Plexi

Postby John Jones » Fri Jun 16, 2017 6:12 am

The drill bit should be "dulled" a bit....not new.
When drill bits are new they are too aggressive as they start drilling into the acrylic which causes it to lift, crack.
FInd a bit thats been used quite a bit on metal first and go easy on the drilling pressure and you will be fine.
Even better if you use lexan instead of acrylic.

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Re: Drilling Plexi

Postby TrueJedi » Fri Jun 16, 2017 7:30 am

Thanks guys this is helpful.
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Re: Drilling Plexi

Postby trueno92 » Fri Jun 16, 2017 8:40 am

Apply light pressure and drill in reverse.

Worked for me with my neo geo overlay and that bad boy was 25 yrs old, and cigarette burned.

No spider cracks

This was for button holes.
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Re: Drilling Plexi

Postby TrueJedi » Fri Jun 16, 2017 9:05 am

trueno92 wrote:Apply light pressure and drill in reverse.

Worked for me with my neo geo overlay and that bad boy was 25 yrs old, and cigarette burned.

No spider cracks

This was for button holes.


Thanks for this. Same purpose. Question...did you start with a smaller drill bit and work your way up to get the circumference of the button wholes?
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Re: Drilling Plexi

Postby brad808 » Fri Jun 16, 2017 9:14 am

I do the opposite of everyone and I use a router. Cuts so fast the plexi doesn't even have time to crack :-P. Plus it goes through that stuff like butter.

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Re: Drilling Plexi

Postby trueno92 » Fri Jun 16, 2017 9:35 am

TrueJedi wrote:
trueno92 wrote:Apply light pressure and drill in reverse.

Worked for me with my neo geo overlay and that bad boy was 25 yrs old, and cigarette burned.

No spider cracks

This was for button holes.


Thanks for this. Same purpose. Question...did you start with a smaller drill bit and work your way up to get the circumference of the button wholes?


Nope just used the button hole size. Look for my neo geo thread in here and I took some pics and the peeps here pointed me in the right direction
Neo-Geo Big Red - 520in1 - 21" CRT
HS-5 -NBA JAM TE/MVS4 - 25" CRT
RadMobile - Upright Multi-Racer/Fighter - 19" LCD
2x PS2, 2x 27" CRT, TimeCrisis II/III iLink Co-Op Shooter
22"/16" Virtual Pinball
Trick Time Slot Pachislo

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Re: Drilling Plexi

Postby b1buwg97 » Fri Jun 16, 2017 10:09 am

Lexan FTW
Or router and nice de-burr tool for the melty edges :-)
Or Step down drill bit and tape where the hole is going (nice masking tape)

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Re: Drilling Plexi

Postby Arcademarauder » Sat Jun 17, 2017 6:10 pm

Masking tape on drill points and safety glasses then give it to her slow 8)
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