tenx82

1/4" ABS is fine. 1/2" if you want to overbuild. Sealed MDF might be okay, but I'd just use ABS to avoid the possibility of it breaking down from moisture.

HushCarAudio sells pre-cut ABS panels for a reasonable price.

dhmcfadin

1/4" I would never use mdf in a moisture rich environment. Use abs.

slodat

I cut these out of 1/8 ABS on the laser. 1/4 is a really tight fit and most guys have a hard time getting the panel on..

Kanadian-kaos

It must be sealed with bed liner. I recall taking out some speakers and the MDF baffles had mushroomed at the edges from moisture.

You can look on ebay for HDPE (cutting board material) as I found it to be cheaper to get in Canada. You can pretty much select your sheet size and thickness on ebay. It is waterproof and very strong.

slodat

I don't care what you cover or coat MDF with (including resin), it will absorb moisture if exposed to moisture. I've seen it happen to the best treated projects in mdf.

dhmcfadin

Yup, never mdf.

slodat

I only use mdf on subwoofer enclosures. And, I'm starting to move away from that in some cases. Everything else is plastics - acrylic, pvc, hdpe, etc.

artsr2002

So what's the price on the ABS covers?

dhmcfadin

Hush Car Audio on this forum sells them. Send Bruce a PM. But, if you own a router or a jig saw and sander, they are very easy to make.

nineball

i used to use mdf as it was cheap and readily available but changed years ago to 7-ply birch. much better product.