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Thread: Acrylic vs Polycarbonate and why? Reply to Thread
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  Topic Review (Newest First)
11-04-2019 09:32 AM
harrysin I've never noticed any difference, but admit that I've never actually looked for any difference in shine.
11-04-2019 06:23 AM
dexcraft Acrylic is shinier and cheaper than polycarbonate.
10-24-2019 10:28 AM
10-23-2019 09:41 PM
RainMan 2.0 This isnít to relevant , but Iíll throw it in here anyways . Itís best not to cut or engrave lexan with a laser.
I knew this but accidentally did it. You canít even comprehend the horrible looking plasma ball of smoke that comes off Lexan, and it damages optics . This is why most companies will not put lexan on their laser engravers .
Itís so strange as plexiglass cuts beautifully with no visible smoke , almost leaves a sweet taste in the air , which I believe the byproduct to be co2 .

For some reason all of our glass shops stock plexi in 1/4Ē thick , but if you want 1/2Ē thick itís always lexan .
No idea why this is . Maybe Iíll ask next time
10-23-2019 09:12 PM
Originally Posted by gmedwards View Post
One other thing. You can glue acrylic, by not polycarbonate. The glue is a very thin liquid and needs a special needle applicator to apply. I found the glue and applicator at a local plastics shop. Here's a link to what you need at Amazon: tw=g&hvrand=8862313467348406152&hvpone=&hvptwo=&hv qmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=&hvtargi d=aud-801381245258la-404766667839&psc=1&tag=&ref=&adgrpid=63696814698&h vpone=&hvptwo=&hvadid=312719382368&hvpos=1o2&hvnet w=g&hvrand=8862313467348406152&hvqmt=&hvdev=c&hvdv cmdl=&hvlocint=&hvlocphy=&hvtargid=aud-801381245258la-404766667839. It's been awhile since I've purchased any, but I believe was cheaper locally.

The ability to glue acrylic really expands its possibilities. As an example, several years back, I made a vacuum fence for my cabinet saw. It attaches to my Incra TS fence system. With a variable speed control on my vacuum, I can set the vacuum from light to so tight it's hard to feed the stock. It has completely eliminated kickback on my saw and ensure the stock remains tight against the fence. It's also very slick.

I used to use a product like this in 55 gallon drums. put into the needle applicator. on polycarbonate. it dried extremely quickly.
10-14-2019 06:11 PM
Stick486 a little more on the subject...

10-14-2019 02:18 PM
TenGees When putting sheets in aluminum frames, we used to put a 'hanging block' along the top and bottom edges of a face. We used methylene for acrylic but pop-rivets for polycarbonate.
10-10-2019 11:28 AM
How to Clean Polycarbonate Sheets

How to Clean Polycarbonate Sheets

Manufacturer-Approved Cleaning Procedures for Multi-Wallcleaning-polycarbonate-sheets. Polycarbonate, Acrylic & APET

The UV-resistant surface treatment on one side of the polycarbonate sheet significantly improves long-term weatherability. Periodic cleaning using proper procedures and compatible cleaners is recommended to prolong the service life. For general cleaning, it is recommended that the following instructions and cleaning agents be used. These procedures and cleaners are also recommended for use on the untreated, interior surface of the polycarbonate sheet, and for acrylic and APET plastics.


Rinse polycarbonate sheet with lukewarm water.
Wash polycarbonate sheet with a mild soap and lukewarm water.
Use a soft cloth or sponge and gently wash with an up and down motion in the same direction as the flutes, as shown in Fig. 1.
Rinse the cloth or sponge and change the water often. DO NOT SCRUB or use brushes or squeegees. The coating on polycarbonate sheets is UV-resistant; IT IS NOT A MAR-RESISTANT COATING.
Repeat rinse and dry with a soft cloth to prevent water spotting.

If a material is found to be incompatible in a short-term test, it will usually be found to be incompatible in the field. The converse, however, is not always true. Favorable performance is no guarantee that actual end-use conditions have been duplicated. Therefore, these results should be used as a guide only and the products must be tested under actual end-use conditions by the user.

I have found that ammonia degradates Acrylic and Polycarbonate's inherent UV protection over time...

Polycarbonate sheets are treated on one side for protection against UV damage. This treated side must be glazed outward or toward the light source to provide protection for polycarbonate sheet substrate.

© 2014 The Polycarbonate Store
10-10-2019 02:04 AM
Stick486 y'all might want to read this...

10-10-2019 01:19 AM
Stick486 How to Glue a Polycarbonate Sheet

Lightly (VF/XF) sand the locations where you want to glue the pieces together.
The locations should be smooth to the touch.
Clean the edges of the sheets where you want to fuse them together.
Add a small trail of methylene chloride or chloroform along one edge of one sheet.
Allow the solvent to soak into the sheet. The edge should become a little sticky.
Place the sticky edge onto the clean edge of the other sheet.
Support/clamp the sheets to keep the two edges in constant contact with light clamping pressure while the sheets dry.
Allow the two sheets to dry for 14~48 hours.
This should be done in an extremely well-ventilated area.

DO NOT FORGET to use your respirator, eye protection and rubber gloves....
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