I used to run a mangle in an un-airconditioned laundry as a summer job for 3 years in a row. Worst job I ever had. However, it did teach me some skills. I am now friends with the owner of a laundromat/Dry Cleaners. When I have a lot of fabric to pre-wash/press, I take it down to the laundromat, and wash it on gentle cycle, dry until still moist. Then they let me take it in the back and run it all through the mangle so "woosh", in a few minutes I have all of my fabric pressed and expertly folded. Days of work done in a morning (depending on how much I have, but I often save it up to do this). Yes, I still have to press and sometimes starch while cutting, and certainly while sewing, but it's minimal once the fabric has first been pressed. The owner lets other quilters use the mangle for a small fee. I'm swopping babysitting their dog for my freebie.