Landracing Forum Home
October 24, 2017, 12:46:44 AM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News:
BACK TO LANDRACING.COM HOMEPAGE
 
   Home   Help Search Calendar Login Register  


(Note: Donations are not tax deductible)







Live Audio Streaming and Archives of Past Events
Next Live Event: TBD
Pages: [1]   Go Down
  Print  
Author Topic: Best tools for cutting polycarbonate sheets?  (Read 12561 times)
0 Members and 1 Guest are viewing this topic.
MRK
Full Member
***
Offline Offline

Location: North SoCal
Posts: 112





Ignore
« on: May 06, 2016, 10:05:42 AM »

I'm going to "fabricate" a window made out of 1/8" polycarbonate sheet. I was going to use a jigsaw on a slow oscillation with a fine blade to rough it out and then a palm sander to finish it.
What say you??
Thanx in advance, Mike
Logged

"Racing is life. Anything before or after is just waiting." Steve McQueen
RichFox
Hero Member
*****
Offline Offline

Location: San Mateo, Ca
Posts: 2419





Ignore
« Reply #1 on: May 06, 2016, 10:07:37 AM »

Pretty much what I did. Didn't really worry about blade speed on my jig saw.
Logged
Eddieschopshop
Full Member
***
Offline Offline

Location: Sacramento, California
Posts: 144




Ignore
« Reply #2 on: May 06, 2016, 10:21:21 AM »

Yup Jigsaw will go through like butter,  not as brittle as plexi so won't crack or blow out from the cutting as easy
Logged
Bob Drury
Hero Member
*****
Offline Offline

Age: 70
Location: Vancouver,Wa.
Posts: 2517




Ignore
« Reply #3 on: May 06, 2016, 10:25:36 AM »

  As for drilling holes (as if You asked) I know that TAP Plastics has specialty drill  bits for sale.  Any one out there had good or bad luck drilling holes?
                                                                      Thanx, Bob
Logged

Bob Drury
jdincau
Sr. Member
****
Offline Offline

Age: 76
Location: Palmdale, Cal.
Posts: 841





Ignore
« Reply #4 on: May 06, 2016, 10:31:35 AM »

Leave enough excess with the saw so you can sand the edge smooth. The smoother the better, it will help prevent crazing later (yes crazing with Lexan). Drill the holes oversize to prevent stress cracks.
Logged

Unless it's crazy, ambitious and delusional, it's not worth our time!
noboD
Full Member
***
Offline Offline

Location: central PA
Posts: 51




Ignore
« Reply #5 on: May 06, 2016, 11:21:20 AM »

For straight cuts use a sheet metal sheer. It can also be bent in a brake.
Logged
Speed Limit 1000
Hero Member
*****
Offline Offline

Age: 67
Location: Denver, Colorado
Posts: 1026





Ignore
« Reply #6 on: May 06, 2016, 11:23:52 AM »

Trepan drill bits drill clean small holes. Unibits are good for larger holes. Baby oil is a good lube. Run the drill in slower speeds to keep from melting the plastic, a little practice drilling on scrap will help.
Logged

John Gowetski, red hat @ 221.183 MPH MSA Lakester, Bockscar #1000 60 ci normally aspirated w/N20
RichFox
Hero Member
*****
Offline Offline

Location: San Mateo, Ca
Posts: 2419





Ignore
« Reply #7 on: May 06, 2016, 03:36:23 PM »

I use a center drill. Plexy or Lexan works great. As long as that is the size you want.
Logged
hotrod
Hero Member
*****
Offline Offline

Posts: 1231


WWW

Ignore
« Reply #8 on: May 06, 2016, 03:59:37 PM »

Here is a video of a guy doing an 1/8 inch lexan windshield for a plane.
Guy does the major cuts with tin snips on lexan this thick, smooths edges of cut with a carpenters block plane and final cleanup of the edge with sand paper.
Makes some interesting observations about heat forming it with a heat gun as well.

Just a bit of not work safe "tradesman" language.



Cold bending with a sheet metal break



Hot bending with heat gun




Interesting vacuum forming setup (example using styrene plastic)


Logged

t-rod
New folks

Offline Offline

Age: 48
Location: West Bountiful UT
Posts: 17




Ignore
« Reply #9 on: May 06, 2016, 07:29:52 PM »

I happen to work in a plastic fab shop. I imagine no one needs to vacuum form polycarbonate for car windows, but polycarb doesn't form as easily as styrene. Jigsaws and sheet metal shears work great on polycarb.

Sent from my SM-G386T using Tapatalk

Logged

Bad decisions make good stories.
MRK
Full Member
***
Offline Offline

Location: North SoCal
Posts: 112





Ignore
« Reply #10 on: May 09, 2016, 10:30:29 AM »

Great stuff. I'm inspired! Thanx to everyone who posted. cheers
Logged

"Racing is life. Anything before or after is just waiting." Steve McQueen
wobblywalrus
Hero Member
*****
Offline Offline

Age: 64
Location: backwoods Oregon
Posts: 4399





Ignore
« Reply #11 on: May 11, 2016, 12:13:54 AM »

A steel burr in a Dremel tool is what I use for drilling and cutting thinner and smaller pieces like bike windshields. 
Logged
floydjer
Hero Member
*****
Offline Offline

Age: 60
Location: grand rapids, michigan
Posts: 2222


"There is no duck side of the moon..."




Ignore
« Reply #12 on: May 13, 2016, 10:23:26 AM »

Single flute bit in a router makes short work of it as well.
Logged

I`d never advocate drugs,alcohol,violence or insanity to anyone...But they work for me.
Speed Limit 1000
Hero Member
*****
Offline Offline

Age: 67
Location: Denver, Colorado
Posts: 1026





Ignore
« Reply #13 on: May 13, 2016, 08:35:05 PM »

Single flute bit in a router makes short work of it as well.


 cheers
Logged

John Gowetski, red hat @ 221.183 MPH MSA Lakester, Bockscar #1000 60 ci normally aspirated w/N20
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Simple Audio Video Embedder
Valid XHTML 1.0! Valid CSS!


Google visited last this page October 18, 2017, 06:38:30 AM