I designed this fidget months ago, it was based on an example I saw on Pinterest. It was designed in OnShape, programmed using Fusion 360 and exported to my Mini Mill via the Grbl Panel. I ran this on my Mini Mill in about 9 minutes using the tooling, and speeds & feeds as listed in the description. The machined surfaces came out pretty smooth, very similar to the OB Fidget, I did however decide to polish not only the top & bottom (like the OBF) but the sides & groves as well..."it's a beaut Clark"
- Machine Time:
- ~9 Minutes
- Bit or Laser Size:
- 1/8" Carbide 4 flute Flat End Mill .375" LOC
- Feeds & Speeds:
- Spindle Speed setting #1 on Dewalt DWP611 (~16,000 RPM)
Roughing was 0.75mm DOC 100% step-over at 500mm/min.
Finishing was 4.83mm DOC (full thickness), material removed, .1mm at 200mm/min.
- Materials:
- 360 Brass Flat Bar
I adjusted the bearing hole diameter on this one, reduced it to 15.8mm, undersized, so I could ream it to insure a proper fit...the finished machined size was 15.75 (not too shabby). I also decided to use tabs this times, although they function as advertised I'm still not a fan. It seems regardless of what material I'm machining or what speeds and feeds I'm using, there is always a small uncut at the points of retract and plunge. If anyone can tell me how to get rid of these I'd love to know!?!?
Here are a couple photos and another short video...it's a bit better than the OB Fidget vidI'll also attach the step file in case anyone wants to give it a try, just remember to adjust the bearing hole size to your liking
VIDEO
Spinning VIDEO
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I'll install the bearing and the Chicago Screw Set tomorrow, I'll post photos of the completed toy then...
All done...spins great for it's size
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Here's the Brass Fidget along with another one of my Fidgets, it's made from a Jockey Wheel off a mountain bike derailleur, that is wrapped with bike chain...
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alex_b and David the swarfer like this.
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