I've searched around, and I don't seem to be coming up with good results on this question. I'd like to get an embossing machine to emboss a simple design and lettering on stationery, like a notary's embossing tool, but I'd also like for it to be strong enough to emboss a moderate-weight printmaking paper (~250 gsm). I don't know a lot about these machines -- are the embossing seals easily interchangeable, or are you stuck with the size of a given manufacturer? Any help would be appreciated.