Radial Pin: Accurate detailed 2D drawing or 3D CAD file wanted

iusedtoberich

iusedtoberich

AzB Silver Member
Silver Member
I'm modeling a Radial Pin for a 3D printed cue project. I need accurate threads. I don't have my radius gauges at this location. Does anyone have an accurate manufacturing drawing of the radial pin (not the install drawing)? This is what I came up with measuring an import radial pin with my calipers and eye. Thanks.



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They run a little different, depending on material or where they are made i have g10 aluminum and stainless, all are different
 
iusedtoberich said:
I'm modeling a Radial Pin for a 3D printed cue project. I need accurate threads. I don't have my radius gauges at this location. Does anyone have an accurate manufacturing drawing of the radial pin (not the install drawing)? This is what I came up with measuring an import radial pin with my calipers and eye. Thanks.



View attachment 734590
Click to expand...
Mike Webb would probably be your best bet. He's known around these parts as "the pin guru."
Good luck with your search.
😎
 
Fusion 360 is free CAD if you want to do it yourself. I don't think you're going to get good tolerance or durability from additive. Just print your pool cue and use a machined pin. Not sure you'll be able to keep the pool cue straight for that matter. Are you using FDM or a power based printer?
 
Thanks all, I reverse engineered the pin I have. The accuracy of my pitch and radius templates is unknown, as the 3D printer does not print perfectly. I'll show the way to model it on the next post if anyone ever needs it. Not guaranteed;)

Also I just remembered I have the genuine Uni-Loc Radial taps (both sizes) from 20 years ago. I might measure the tap itself later. That tap and genuine Uni-Loc Radial Pin were about 10 times tighter than this knock-off pin. But this is the actual pin I'll use on my project, so this is good for now.

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To model the knock-off pin:

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.369 OD


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.130 pitch, with the helix on the OD.

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Sweep section of a circle, .150 diameter. Add a second circle (construction, not geometry), 1 pitch diameter away. Make a point at their intersection (red circle). Make that point coincident with the OD of the screw.

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Sweep the circle on the helix. Clean up the ends with a lead in and lead out revolve as a chamfer, etc, to your liking.

That's it.
 
galipeau said:
Fusion 360 is free CAD if you want to do it yourself. I don't think you're going to get good tolerance or durability from additive. Just print your pool cue and use a machined pin. Not sure you'll be able to keep the pool cue straight for that matter. Are you using FDM or a power based printer?
Click to expand...

Yes, I'm using a stainless steel radial (knock-off) pin. It will be inserted into a 3d printed female thread. That's why I wanted an accurate male thread first. Here is my thread on the 3D printed cue if you are interested:

3D printed pool cue

This will be updated as I make progress. Right now I'm in the early design stages. Goal is a multi-piece pool cue I can bring inside my schoolbag carryon on a plane. I travel light and don't bring a suitcase. The first 16" will be cut from a Predator 314 shaft. The rest will be 3D printed...
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