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Old 12-02-2019, 10:05 PM   #1
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Default Acrylic chassis rails

Hi all,

I want to 3d print this for fun but the chassis rails won't fit on my bed.
A mate of mine said he can laser cut me the rails but he is only allowed to use acrylic or wood at his work.

He said he can do 4.5mm thick acrylic..

Has anyone got any experience/have any indication if 4.5mm acrylic would be rigid enough?

https://www.thingiverse.com/thing:3340951

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Old 12-02-2019, 10:14 PM   #2
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Default Re: Acrylic chassis rails

Acrylic will crack. If he can do g10 that's good stuff. It's reinforced and compressed resin.

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Old 12-02-2019, 10:15 PM   #3
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Default Re: Acrylic chassis rails

Wood would be better then acrylic probably.

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Old 12-02-2019, 10:16 PM   #4
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Default Re: Acrylic chassis rails

Honestly, I would NOT recommend it. It's not a matter of whether, or not, they are rigid enough. Acrylic is a fragile material, and could crack, or shatter, fairly easily. Years ago, I worked in the Plastic industry, so I know of what I speak. now, there is the possibility that lexon, or any generic cast polycarbonate, could work, but I'm not going to go so far as to say it's "will" work.

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Old 12-02-2019, 11:21 PM   #5
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Default Re: Acrylic chassis rails

Thanks guys.

I'll see if someone local can print it

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Old 12-02-2019, 11:45 PM   #6
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Default Re: Acrylic chassis rails

I used 1/8" polycarbonate for chassis rails. It works but requires a lot of reinforcing to make rigid. It can work, if designed right.... I wouldn't touch Acrylic.
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Old 12-03-2019, 04:05 AM   #7
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Default Re: Acrylic chassis rails

+1 on acrylic being way too fragile for crawler truck frame rails. Acrylic is good for fake glass, that's about it.
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Old 12-03-2019, 06:14 AM   #8
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Default Re: Acrylic chassis rails

What types of exotic woods do you have access to?

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Old 12-03-2019, 07:07 AM   #9
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Default Re: Acrylic chassis rails

I made bull bars out of acrylic once. Looked nice, shattered instantly.
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