supports not touching model

[jojoreondo73 0]

supports are printing up along the angle on the bottom but because of the gap the piece moves while printing. Is there a way to have small attachments points like the flat part along the raft so that the piece is secured to the supports but still able to remove?

 

Thank you for the help

[RaphaelOst 8]

Hi, I would set some little pillars in the CAD program. 

There you can customize them any way you want. 

[GregValiant 1,141]

Tall thin models are tough even without an undercut like that.  When an overhang is less than about 63° (at .2 layer height and .4 line width) then it often won't need support and so the part doesn't contact the support structure.

In the case of that part - your printer is working very well and that makes it part of the problem.  The support is there to provide structure so it doesn't "air print" but your printer doesn't need that and so there is a gap.   You could try setting the Support Overhang Angle to 30° but the best fix would be to do as @RaphaelOst says and stick another model in there to hold that one up.  If you were to bring a Support Blocker in and scale and move it to support your model and then configure the "Per Model Settings" of the blocker to "Print as Support" it might be sufficient.

 

If I have a tall thin model like a flag pole I usually go into the Gcode file and at around layer 450 add an M201 Y150 line to limit the Max Acceleration on my Y axis.  That keeps my bed-slinger Ender 3 Pro from whipping the model back and forth.