OP-Z Volume Knobs

Volume Knobs for the OP-Z.
Remove the Original knob by pulling it out and then press in the newly printed one.

1) Shorter OG Knob: Like the original OP-Z Volume knob but a bit shorter
2)Lego Technics Cross Bar Knob; Knob which can fit Lego Technics parts (such as wheels etc)
3) Round Knurled knob with Lego Technics pocket: a small foot print design with posibility to attach Lego Technic parts
4)Cross Knob: Knob with a big cross on.

****Disclaimer*****
I cannot guarentee a perfect fit since tolerances vary between printers so print and attach at your own discretion.

If using PLA and similar low heat resistent materials and the Knobs are to tight to attach, then rinse under hot water or use blow dryer (on hot setting) to soften the material, for a more easy assembly.

You can also use a box cutter or similar instrument to remove some material on the inside of the knob.