I'm designing a shaft to be printed with WSF. A donut-shaped piece, printed in Stainelss steel, will fit on the shaft. What kind of tolerance (i.e. space) should I leave between the two pieces? Thank you, Guido
Oeh wow, err not so easy to answer.. Depends on sizes and required tightness. Should it fit immediately or is post processing allowed? My rule of thumb for deviation on most materials is +/ 0.1 mm So an effective clearance of 0.2mm But plenty of occasion where it was not enough. It's a bit of trial and error but things can be different between batches For tight fits I design no clearance and use sanding to make it fit
I need a tight fit, but I'd like to have no post-processing since it will spin. For this reason it needs to be well balanced and I'd like to avoid any filing. Thank you, Guido
if they are to be printed together 0.6mm so they dont fuse. if not together you can get away with 0 if they can be high friction 0.2 to 0.3 for low friction.
my bad. did not see the steal thought they were both steel. steal warps a lot. your donut may be a slight oval when you get it. i know 0.2mm is to small. not sure how big will work though.
Maybe this way it's clearer. The grey part is WSF, it will fit on the shaft protruting from an electric motor. The blue part is steel, it needs to fit on te WSF part. I'd say it needs to fit tightly, but I'd like to fit it without exerting too much force. The whole thing will spin, so I want it to be perfectly centered and balanced. I will put some glue in there too, just to be on the safe side. Thank you all, Guido
mctrivia, do you have any recommendations on how to shape the steel so it warps the least possible? Thank you, Guido
sorry. warping depends on what orientation they print in. if they print with bottom down it probably wont warp at all. you will probably be safe. my guess is 0.2mm on each side will work for you but you may need to sand the wsf a little.