Why do the two cylinders snap off after i print this?

thanks for the help.

joe

Hi joe, do you mean you're doing 3D printing with this?

You've got 3 separate solids in that file - the slab and the 2 cylinder pieces are all separate parts. Are you exporting each part to an individual file and printing them separately or are you trying to export that entire 3 solid set to just one single STL file?

STL files are generally meant to only contain one single solid in them, so it's probably going to confuse your 3D print prep software to receive a file with multiple solids in it especially with the parts pushing halfway through each other.

You probably need to either export each part into individual files if you want them to come out as individual separate printed parts, or if you want it to all be one single object then you need to select them and run Construct > Boolean > Union before you export it, so that they are combined into a single solid rather than multiple solids that collide into each other.

Hope this helps!

- Michael

i was exporting all 3 as an stl and printing. i suspected there was a way to make them one object.......i was trying join, but now know to use the boolean union command.

thanks for the speedy response. it is one of the things that make MoI a great program to work with!

No problem joe! Join can be used when you have individual surfaces that have edges touching each other. Join glues individual surfaces like that into a connected piece.

The booleans on the other hand work with solids and will intersect the pieces with each other, slicing some pieces out and then connecting them up into a new combined solid.

So if you have a bunch of surfaces you want to glue together, Join works for that, if you have solids pushing through each other use booleans for that case instead.

- Michael