# Mini acrylic case assembly problem

**URL:** <https://discourse.myriadrf.org/t/mini-acrylic-case-assembly-problem/3166>\
**Category:** LimeSDR\
**Created:** [13 August 2018 21:19 UTC](https://discourse.myriadrf.org/t/mini-acrylic-case-assembly-problem/3166 "2018-08-13T21:19:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dbrooke](https://avatars.discourse-cdn.com/v4/letter/d/9dc877/32.png) [@dbrooke](https://discourse.myriadrf.org/u/dbrooke)\
**Post date:** [13 August 2018 21:19 UTC](https://discourse.myriadrf.org/t/mini-acrylic-case-assembly-problem/3166/1 "2018-08-13T21:19:41Z")

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I recently received a LimeSDR Mini and acrylic case but when assembling the case I find that the screening can is taller than the rail thickness and thus prevents the top from seating on to the rails.

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**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [14 August 2018 07:26 UTC](https://discourse.myriadrf.org/t/mini-acrylic-case-assembly-problem/3166/2 "2018-08-14T07:26:50Z")

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This can happen due to tolerances and should not be an issue if you do not over-tighten, since the nuts are nyloc and the case is designed to protect the board from knocks and backs, not ingress protection.

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**Author:** ![dbrooke](https://avatars.discourse-cdn.com/v4/letter/d/9dc877/32.png) [@dbrooke](https://discourse.myriadrf.org/u/dbrooke)\
**Post date:** [16 August 2018 15:12 UTC](https://discourse.myriadrf.org/t/mini-acrylic-case-assembly-problem/3166/3 "2018-08-16T15:12:46Z")

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Thanks for the reply.

Despite some reservations about the mechanical and thermal aspects of your suggestion I have carefully assembled it that way since it does at least protect the board. However it was only possible to get a couple of turns on the nuts so the nylon hasn’t really engaged to lock the thread and I don’t yet know if they will loosen.

An additional pair of rails and correspondingly longer bolts would give a better result.