Hey everyone, Our college student club participates in the SAMPE Beam competition every year (http://www.nasampe.org/page/bridgecontest).
We've been using donated (and usually expired) CF/GF prepreg to make 24" long I beams for the competition. This year however we don't have access to an industrial oven/autoclave, and we are (desperately) thinking of making our own.
We have a fairly decent budget (not enough to buy an industrial oven ourselves tho). However we don't have a lot of hands on experience in oven making. Are there any good resources/DIY guides on that, especially one that caters to beginners? Any help will be greatly appreciated.

For reference the material we have has a cure temp of 250-300F. Since we'd cure our beams with tooling material (usually aluminum bars), we'd probably need inner dimensions to be at least 14" x 26" x 10". Power bills are not an issue since we use university resources anyway. An idea that was floated around was to simply modify and extend a regular kitchen oven and add heat guns for even heat distribution. Thoughts? Ideas? Thank you!