# Interference fit implementation

**URL:** <https://prepomax.discourse.group/t/interference-fit-implementation/409>\
**Category:** General Questions\
**Created:** [September 22, 2022, 11:16am UTC](https://prepomax.discourse.group/t/interference-fit-implementation/409 "2022-09-22T11:16:45Z")\
**Posts on this page:** 1\
**Showing post:** 30

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**Author:** ![AsuraEquation](https://avatars.discourse-cdn.com/v4/letter/a/6de8d8/32.png) [@AsuraEquation](https://prepomax.discourse.group/u/AsuraEquation)\
**Post date:** [November 5, 2024, 1:25pm UTC](https://prepomax.discourse.group/t/interference-fit-implementation/409/30 "2024-11-05T13:25:56Z")

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> [@Droid](#):
>
> shaft and a bush with interference fit with contact pair

Calculix has problems with this kind of geometry where there is contact between two cylindrical parts.  
I get this a lot when I have pin to compute.  
To solve this problem I usually do what Gunnar suggested me in this post (i.e., I use the compound part) [Bolts shear contact not working correctly](https://prepomax.discourse.group/t/bolts-shear-contact-not-working-correctly/1734) (see his first post).  
I tried to write about the problem on the Calculix forum, but they suspended my account and deleted the post (I honestly don’t know why, I was neither insulting nor rude, I just rewrote what you see in the post I linked to you).  
I hope this solves your problem.

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