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Thread: did i get cast or extruded acrylic

  1. #1

    did i get cast or extruded acrylic

    I got a sheet of acrylic, I ask for cast. But its got blue plastic sheild instead of paper. Somebody told me that its probley exdruded and it smells worse than cast when cut. And this stuff is rank. I need to seal up my exaust system better. But if cast dosnt smell a lot less I don't wanna waste more money gettin it. I'm a hobbist with neighbors and don't wanna bug them. What's your opinion of cuttin cast in this situation.

  2. #2
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    If it smells sweet when you are engraving and the engraving itself is frosted, you have cast. If it smells very acrid and engraves relatively clear, it's extruded.
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  3. #3
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    Burn a small piece, cast will burn with a crackle and wont drip molten flaming balls ,extruded will burn silently and will drip flaming balls
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  4. #4
    Ok I did the burn test. No crackle, dripings burned for about two feet while droping. Sounds like they ripped me off. Do you think I can get away with cutting cast in a residintal area. Or will it smell to bad.

  5. #5
    I doubt that anybody will notice. It's not that bad.
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  6. #6
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    Quote Originally Posted by Troy Shaffer View Post
    Ok I did the burn test. No crackle, dripings burned for about two feet while droping. Sounds like they ripped me off. Do you think I can get away with cutting cast in a residintal area. Or will it smell to bad.
    Is there a brand name on it? Cast is a good bit more cost, if you paid for cast, I think I would get the distributor to document what he sent you. A reputable distributor will take care of you.
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  7. #7
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    Cast acrylic snaps when folded, extruded is much more robust and will bend quite a lot before it breaks. Also if you hit it with something sharp it will leave a white dot, extruded will leave nothing.
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  8. #8
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    Oddly enough , the Cast acrylic I have imported from China is cheaper than extruded from there. Local suppliers here charge 10% less for extruded.
    Rodney Gold, Toker Bros trophies, Cape Town , South Africa :
    Roland 2300 rotary . 3 x ISEL's ..1m x 500mm CnC .
    Tekcel 1200x2400 router , 900 x 600 60w Shenui laser , 1200 x 800 80w Reci tube Shenhui Laser
    6 x longtai lasers 400x600 60w , 1 x longtai 20w fiber
    2x Gravo manual engravers , Roland 540 large format printer/cutter. CLTT setup
    1600mm hot and cold laminator , 3x Dopag resin dispensers , sandblasting setup, acid etcher

  9. #9
    Rodne, after looking at your photo.. Hmmmmm... your starting to look a little Chinese!
    Martin Boekers

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  10. #10
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    I'm changing my name to Lodney and my wife's to Luth
    Seriously tho , I have started mandarin lessons and maybe plan to move there in 3-5 yrs. I recon things will get bad in my country in 10 years time , politically. We have a cross between idi amin ,robert mugabe and hitler who will be our president soon , we live in Africa , seen this all before.....
    Rodney Gold, Toker Bros trophies, Cape Town , South Africa :
    Roland 2300 rotary . 3 x ISEL's ..1m x 500mm CnC .
    Tekcel 1200x2400 router , 900 x 600 60w Shenui laser , 1200 x 800 80w Reci tube Shenhui Laser
    6 x longtai lasers 400x600 60w , 1 x longtai 20w fiber
    2x Gravo manual engravers , Roland 540 large format printer/cutter. CLTT setup
    1600mm hot and cold laminator , 3x Dopag resin dispensers , sandblasting setup, acid etcher

  11. #11
    :*lol* sounds like a winner Lodney

    @Troy - did you try to engrave it and was it frosted ?

    Here in Germany cast is about 30% more than extruded.
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  12. #12
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    Fumes from both cast and acrylic are quite smelly. The good news is that they dissipate fast. The cut edges also smell, so bagging or boxing them can help.

    If your neighbors smell it, they won't like it. So you'll have to do sniff checks. Worst case, you cut when it is raining (which eliminates the fumes), or when it is cold or hot such that windows are closed.
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