What's new
By:

Looking For An Adhesive

RocketNut

RocketNut

Alibre Super User
I need a adhesive to glue a 3Dprinted part (PETG) to the shaft of a NEMA34 stepper motor shaft. The shaft is keyed and part matches the shaft diameter an key way (has to be taped on with hammer). The problem is motor gets extremely hot (hot enough to burn your finger). This heat softens the plastic to the point it does not hold and loses alignment.I think I was hope the PETG would bind with the shaft. when motor cooled but it does not. I might need an adhesive to glue the part to the shaft. Because of this heat the adhesive has to be able to handle these temp.

So the question is what type of adhesive should use?

I'm also open to any suggests on how to mount the part to the shaft.:):)
 

Attachments

  • DSCN0695[1].JPG
    DSCN0695[1].JPG
    1 MB · Views: 16
Last edited:
RocketNut said:
I need a adhesive to glue a 3Dprinted part (PETG) to the shaft of a NEMA34 stepper motor shaft. The shaft is keyed and part matches the shaft diameter an key way (has to be taped on with hammer). The problem is motor gets extremely hot (hot enough to burn your finger0. This heat softens the plastic to the point it does not hold and loses alignment.I think I might need an adhesive to glue the part to the shaft. Because of this heat the adhesive has to be able to handle these temp.

So the question is what type of adhesive should use?

I'm also open to any suggests on how to mount the part to the shaft.:):)
Click to expand...
I doubt an adhesive would work, what you need to do is have a sleeve inside the 3D printed part to act as an insulator, so larger bore hole in 3D printed part and the a sleeve. I would suggest G10 glass rod suitably machined.

G10 is a good insulator.
 
This is certainly not what you want to hear, but I see 2 possible solutions:
1) make your part in metal, not petg. The price of 3D printed metal has come down quite a bit.
2) change the motor control so it doesn't get so hot.
A part that looses alignment on the shaft because of softening will also not transfer any torque even if it is glued to the shaft, so it is pretty useless.
 
You must log in or register to reply here.
Back
Top