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Main => Main Forum => Topic started by: digitap on August 04, 2005, 01:29:45 pm

Title: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: digitap on August 04, 2005, 01:29:45 pm
I'm thinking about making a small cabinet where the sides, or preferable, the entire cabinet is made from polycarbonate (lexan).  Since it's a very poor insulator and can store up static electricity on the surface, would there be any danger to the users?  I'm thinking if a monitor was decased and mounted, would it ever try to arc over to the lexan sides?

Would any static buildup cause concern to the other components - controls, ipac, pc, etc?

Would the normal ground from the pc and monitor power supplies and cords be sufficient?

I suppose building a frame out of metal or wood, then attaching the lexan to it might alleviate some of this, but I'd prefer a completley clear case.  I know I've seen completely clear pc cases, but don't know what they're made out of.
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: JCL on August 04, 2005, 01:38:38 pm
If everything is wired up correctly, this shouldn't be a problem. Why should this be any worse than other non-conductive cabinets. Wood is an insulator as is the plastic found around almost all CRTs you will come across (TVs, computer monitors, etc).

I wouldn't worry about this at all as long as you properly wire the cabinet. And if you screwed up wiring, it wouldn't matter if the cabinet was plastic or wood or whatever. Pay proper attention to grounding and everything should be fine.
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: Franco on August 04, 2005, 01:42:43 pm
Any idea what kinda price 1/2" - 3/4" poly/lexan is? Cant imagine it being cheap. Would love to see an all lexan cab though!
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: digitap on August 04, 2005, 02:56:37 pm
Yeah, 1/2" is big $$, don't know if they even make 3/4.  That's why I was thinking a bartop-style.  I'm a bit worried about it being stiff enough to properly hold a monitor, so was thinking a wood/metal framework - that would also help with screwing the pieces together, as trying to put a screw or other fastener into something <1/2" would be tricky at the least.  I'm sure there's ways to glue/bond it together, but then there's the serviceability aspect to think of, too.
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: AlanS17 on August 04, 2005, 03:45:44 pm
Well 1/4" lexan would be hard enough, but it bends. That would pose a problem.
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: Bones on August 04, 2005, 10:31:13 pm
I just got a large sheet of Lexan that is 8mm (5/16") thick.

The first thing that struck me is just how heavy it is. It really is heavy and comparable to 18mm MDF in weight. This stuff would not bend but I would expect if it was loaded wrong it may snap violently.

I dunno how it would handle the weight of a monitor but the piece I have feels pretty damn strong.
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: AlanS17 on August 04, 2005, 11:54:01 pm
No bend at all? Interesting...

I don't know what it would take to snap it, but I know you can lay it on the ground and pound it with a sledge without cracking it..
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: Quarters on August 05, 2005, 12:04:28 am
MonitorGuru, Where did you get that pic? Is there a site that goes with it? I've been thinking along similar lines only with side art printed on transparencies lit up from within.
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: AlanS17 on August 05, 2005, 12:10:09 am
I think it's form a museum or something. Don't quote me on that. I wouldn't know where to go looking for the orignal machine, but the picture has been floating around for more than a couple years already.
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: tommy on August 05, 2005, 01:12:44 am
Why would you want to see everything inside the cab? If you were dead set on making that sort of machine atleast make it with a grey plastic so it dosen't look like a CP and marquee floating in the air. I also would think all the heat from inside would fog up and maybe even melt some of the plastic.

Make it thick. 3/8
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: AlanS17 on August 05, 2005, 01:18:34 am
I don't think heat would cause any problems with the plastic. It would get gross on the inside, though. Every machine does. And you can't just wipe it clean. It'll scratch very easily.
Title: Re: Safety of an all-plastic (ie lexan/polycarbonate) cab
Post by: JCL on August 05, 2005, 02:24:43 am
Lexan won't snap without *extreme* abuse. Acrylic (plexiglass) is much more breakable.

If it seems stiff enough, it is certainly strong enough.