I just depotted my urban decay palettes and i can't believe how little room they take up now. It's a bit precarious as they are just laid out on top of my dressing table at the moment while i wait for delivery of 4 Z Palettes from Love Makeup but the hard part is out of the way. The only casulaties i had were a couple from my deluxe palette and one or two from the Vice palette but they weren't fully broken just a bit of a big dent. I've not yet attempted my 15th anniversary palette.
I am also debating on whether to do the naked palettes as they are quite slim anyway but it would be nice to see everything i've got in the Z Palettes and then if i travel i can always take a custom palette including some of those eyeshadows if i want.
Did you depot your Naked 1 and/or 2 palettes if you have them? If so what method did you use?
P.S. I've not pressed MAC pigments but i did some other from various brands with Iso Propyl (rubbing) Alcohol that i bought off ebay. I think mine was 90 or 99%. I believe surgical spirit is same and the name they give it in the UK. The only thing i think to look out for is matte pigments as you cannot just use the alcohol for those when pressing and you need a source of Dimethicone such as a tiny amount of Biosilk silk therapy which i've read on various blogs people have used. Luckily my brother works as a chemist at PZ Cussons (he takes part in inventing all the new fragrances of Original Source shower gels) so he bought me some straight Dimethicone from his lab.
P.P.S. Lipglossiping has a good guide here:
http://www.lipglossiping.com/2010/03/pressing-a-barrym-dazzle-dust-and-other-pigments/ that's pretty much the way i did it