I could do with some new t-shirts, and I figured I may as well design my own this time around. I'm aiming for dark fabric with non-rectangular images with lots of colours.
Having some fun here – I've had a look at thetshirtman.co.uk's site, and the SVG loader doesn't understand Inkscape images, and the GIF loader does the same with my 300 DPI 1 bpp GIF: invisible image, does nothing if you try adding it to the shirt. Their software is horribly broken even by my bug discovery standards.
Two prominent names with a UK presence are Zazzle and Spreadshirt. Spreadshirt play down their digital direct service and make it sound rubbish, but that's what I'd have to use; Zazzle's documentation don't inspire me with confidence either, and neither company could give me an intelligent response to my queries about handling image transparency when I found their documentation lacking. Zazzle have clarified theirs since, but Spreadshirt don't say anything about PNG alpha or GIF transparency.
Anyone had any experience with these services' UK offerings for print-on-demand? How many bad print jobs am I likely to go through due to bad colour balance (I only work in RGB with no profiling), wrong print size (the designer only understands 'M' and apparently doesn't scale to shirt size) and other gotchas? If anyone has a black Firefox t-shirt, that's what I have in mind: non-rectangular half-toned image.
I might be able to pull off vector, but Spreadsheet don't have vector support in their editor, and the site I just tried doesn't understand Inkscape files!