# Filament buffer custom macros

**URL:** <https://forum.sovol3d.com/t/filament-buffer-custom-macros/8808>\
**Category:** Sovol SV08 MAX\
**Tags:** firmware\
**Created:** [September 30, 2025, 5:13pm UTC](https://forum.sovol3d.com/t/filament-buffer-custom-macros/8808 "2025-09-30T17:13:18Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![KoizumiChineko](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/koizumichineko/32/4501_2.png) [@KoizumiChineko](https://forum.sovol3d.com/u/KoizumiChineko)\
**Post date:** [October 3, 2025, 10:08pm UTC](https://forum.sovol3d.com/t/filament-buffer-custom-macros/8808/12 "2025-10-03T22:08:55Z")

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I wasn’t asking about the software I’m FW engineer outside hobby so I do understand code and how it works(with issues I hate python :D). I was curious about mechanical/physical principles of this extender, but i wrote sketch with force vectors and understood how it works.

Btw length correction was easier to implement that expected

 ![image](https://canada1.discourse-cdn.com/flex030/uploads/sovolforum/original/2X/4/4999abbac2b05b210d94e6019826dbdabe0910b1.png)

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