Originally Posted by richie_2010
I will look into the heat problem when its in use.
Thinking about it if the heat affects acrylic then why does the plastic on gpu shrouds not warp or melt due to the warmth.
Ill admit I know of little about plastic and acrylic differences
I work with acrylic a lot, and most of it I laser cut and use heat bars and a special oven to form into what I need. I can tell you now just being exposed to any heat above room temp for a period of and under any pressure will cause it to warp. I know you said you plan on using 5mm acrylic which is pretty thick but over time from even just being in the increased temps of the inside of moderately well vented case will effect its long term life. And as for your comparison to GPU shrouds there is no comparison. Acrylic and (I am taking a guess here) Polypropylene, the most common polymer for injection molding are two completely different materials when it comes to temperature and pressure.
Structural melting point is 35c for Acrylic. My guess is most cases will get hotter than that on the inside. Since I am in the US I feel the need to say thats just 95f, my room alone can get hotter than that in the summer, never mind when I am in the middle of a gaming session. I've seen a sheet of acrylic bend a sheet under it just from being in a warm room.
Structural melting point for Polypropylene is around 160c I think, depending on quality. No ambient temp + max load will ever come close to 320f.
I am not trying to stop you from doing this, I am just letting you know you might need some more planning. I know acrylic is cheap and easy to work with, its why I love it, but its also never recommended to be used in something under pressure and definitely not under pressure and heat.
I am in school for Industrial design and taking multiple courses on materials and manufacturing. I have talk to professors and other people who have all had real world experience with all these materials. I have worked extensively with acrylic and using heat to make products with it. I can tell you now there will be issues with the bracket warping and the cooler loosing contact with the card.
If you do want though I can help with making prototypes. I have free access to a top of the line laser cutter and some scrap acrylic to cut up. No 5mm but I think some .125", I'll check though. I will gladly cut you some prototypes to test this out before investing more money into this project.
Also another good example of how I know it will warp is I used .2" acrylic which is just over 5mm on my RoG03
case mod. The acrylic on the left side of the window is warped just from the slight pressure of the two screws to mount it and the heat from my 670 being near there. I just put that case together 8 months ago and there is a pretty good arch in the piece of acrylic. Probably going to cut another entire panel to replace it soon. Its not in those photos as I took the photos right after completing it but its pretty visible now.Edited by Wicked x Josh - 9/4/13 at 2:58pm