Jerseyhammer
·I have done it once out of convenience with a screw bracelet (pix below). Did not use heat but I did not enjoy the experience / probably did scratch one of the screw heads a bit - but I was a long way from an AD / anyone I trusted. I have sized a few with the old push bar system - I don't mind those / easy job with the right tool. Mostly I get them sized by an AD or watchmaker now.