for you acrylic guys

[535freak]

you know I think your right about it being abrasion resistant. This stuff is tinted and was originally used as windows in buses.

 

[Acrylics]

Bus windows eh, check to make sure it's not polycarbonate like Lexan or Hyzod. That stuff is what we normally use for bus & train windows; specifically Lexan Margard MR5 or MR10. There will often be stickers on the material saying "ripple orientation"
Again, if it is, it will be coated, and would be darker because polycarbonate has more color than acrylic.

If it is acrylic and used for bus windows, it would most likely have the coating.

James

 

[535freak]

since most likely it has the coating I can sand it off

 

[troylee]

You would need to know if its acrylic or lexan first...if you have a scrap the easiest test would be bending it and see if you can make a 90 or if it snaps....if it bends without breaking it is lexan or another plastic...acrylic will break if bent and will not hold a shape unless heat formed....

 

[535freak]

I will check it out in the morning

 

[535freak]

Ok I checked to see if it is lexan or acrylic and it must be lexan because it bent over and didn't break. So back to the coating is there a chemical that will take it off or do you sand it?

 

[Acrylics]

There is no chemical that will remove the coating, it must be removed mechanically whether by sanding or machining.

Do you, by chance, have a pic of this material along with the shavings? Lexan (polycarbonate) and acrylic are altogether different materials, glue in different ways, machine differently, and so on. Not knowing what you are doing with it - things can go badly pretty quick with this stuff.

James

 

[troylee]

lexan is very grabby with a router most likely your problems with the ridges.....

 

[troylee]

let me ask you this...what are you trying to make??? lexan is not gonna hold water worth a poo....i would suggest investing in some good quality cast acrylic...:acrylite gp, plexiglass "g" or poly cast...

 

[browntrout]

<a href=showthread.php?s=&postid=15660210#post15660210 target=_blank>Originally posted</a> by Playa-1
Laser cutter seems to work nicely.

Laser cutters work great for cutting acrylic and leaving a nice polished edge, but they are crap if you plan on welding the edges after they have been cut on the laser. I use my laser to cut my pieces withing a 1/32 the use a router to make a perfect finish.

 

[535freak]

I was going to make a sump out of it but maybe I won't be doing that anymore and THANKS EVERYONE for your help!

 

[troylee]

Ya I don't think it sounds like a feasable material for a sump....lexan is very flimsy and does not bond/ glue well.... try gluing a scrap up with a solvent see if it even melts it...hth..

 

[535freak]

I have some other stuff that I know is acrylic so I guess I will just use it or find a used tank and THANKS again for all your help