I liked the knobs made by 3DPrintNOVA and I printed one thinking they may be the same for the Tarantula, but the Tornado must have larger screws as it was way to big.

I scaled it and when you hammer in the original nut properly it makes an excellent adjustment knob for leveling the bed on the Tarantula too!

TEVO Tarantula

Doesn't Matter

Doesn't Matter

.2mm

20%

I didn't bother to print it with a brim it's a pain to cleanly remove and it's not really necessary