About this 3D model

I've been having trouble with my sense of balance. I modeled this knob to screw onto the end of a paint roller extension handle so that I could cut it to length and use it as a cane. I thought that could be useful to others as well. From what I've read it seems broom handles and paint rollers and such outside the US use different standard threads. This is for the US Acme thread 3/4"-5