Slapping on a new (and better) heat sink should be easy enough. Would still be a bargain.
If you want to reach decent speeds with steeper aim at least at 40V. General rule of thumb if you need more than 150W of power on one axis go for servo. I have very good experience with leadshine, geckos although were once one of the best are these days a little outdated. Also go crazy with construction, milling produces a lot of unwanted forces on hardware. Make it strong an heavy.
@Thomas_Sanladerer pity I havent seen your comment a day ago when I ordered 5 of these 6560s to make drivers out of. What’s so sensitive in them? Or are they OK to use in underpowered conditions of a 3D printer?
maybe. keep them cool! and run lower then the rated amperage at no more then 24v and you should be ok.
@Igor_Larine the most critical thing about these is that you always apply logic voltage before motor voltage. Making your own circuit will likely get you much better results than buying a ready-made chinese board, since those usually contain more shoddy design choices than you can count.
@Joe_Spanier yeah, that’s easy at 12 volts and a 1-1.5 amperes. Just looking for a local source of drivers. Thanks!