Finished my blueprint 1503 based box last night! It's 5 cubic feet net, but overall is about 8 before taking the ports, bracing, etc. away. Tuned to 20 Hz w/ the slot vent. Let me know what you think - I don't think it's too bad for a first timer! 3 sheets of MDF, 2 quarts of paint, 1 quart of floetrol, 2 bottles of titebond, 1 pack of nails for my nailgun, several packs of sandpaper, and I'm done! Hopefully I did this right - I took a LOT of time finishing the box so that it would come out looking well for my HT, due to the SAF. I've gotta thank Kyle Richardson - he helped me IMMENSELY in this project, and went so far as to have me up to his house to see the driver in person and listen to his BP 1804 in his own HT. Thanks again Kyle! What I learned: -Check your measurements 5 times. Not 2. Yes, that is another box sitting underneath the second, which was my first attempt. -If you think you're building a small box, and you want it vented, try doubling the size. That'll be much closer to the final size than Unibox tells you. -I like working with metal infinitely more than wood. I sanded the box, filled with bondo, sanded again, filled with spackle, primed and sanded 4x, and topcoated and sanded 3x. And there are STILL 2 seams visible - barely, but they bother me. And let's not even talk about the dust from MDF. I'm gonna be coughing up dust for the next 6 months, even wearing a dustmask. Here are the pics - some are compressed to lessen the download time, so they don't look that good - but you'll get the idea.