Registration Pins Solution

I wanted to share a way I found to be very effective and simple to do a flip job on a sea of holes bed. I found threaded pins in McMaster Carr to fit my 10-32 threaded bed. I use 1" threaded rod and two pins to create the registration pins needed for a flip job

Very simple solution and perfect registration. I can now use any two co-linear holes down the Y or X centerline to use as flipping axis. Flexible and simple. This was my learning first test and I feel it was very successful. Would love to know what you guys think. Also getting very proficient at getting a very good finished surface. Fusion 360 makes it so easy to test strategies before committing to any plan. I love it. It has made my learning path so enjoyable and exciting to continue because it has allowed me to get positive results from the get go.

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Nice work! Have you got the CAD file for that soap dish? I swear I have seen it somewhere before but I can’t remember where…?!

I think this registration system is absolutely brilliant. Great work! Will be using this idea.

Is that the hi-tech systems bed?

I’ve been using shoulder bolts for this, and it works pretty well too. They’re nice because they’re one piece, cost about the same.

I do @nick but I can’t share it because it was purchased. It is not expensive and worth the learning. It’s here http://www.grunblau.com/SoapDishBMO.htm

@mikep I also got shoulder bolts but like the idea of attaching the pins anywhere on the bed (which you can too) and slipping the piece in and out without taking the pins out. Not a big deal though.

@MrHume Yes, its the hi-tech bed.

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One other question, I just looked on McMaster, but I can’t seem to find the pins you’re using. Do you happen to know off hand the name McMaster calls them?

@patofoto Ahh yes I remember watching a youtube video on his channel! Thanks for the neat flip jig idea though :slight_smile:

Threaded dowel pins: https://www.mcmaster.com/#threaded-dowel-pins/=15ll6f9

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Optimising tool paths for this particular cad file!

Yes. I sent the file to John asking him for help and he decided to make it into a video. Very interesting approach although I think his parallel strategy won’t have a good finish. I tried it and ended up changing the strategy to have a smoother finish. His suggestions on plunge speed and bullnose end mill are very good and probably something I will implement.

At the risk of asking a stupid question: how do you get the two initial holes (the ones that fit the dowel pins) into the stock, with sufficient accuracy, in the first place?

You make them part of the initial part, on the flip axis. then they are cut with the part, and guaranteed to be in the right place.

But… from the photos, it looks like the holes are in place before the first pass through the Nomad. If that’s the case, that would require either drilling out the holes first (with a jig), or running an initial pass with the Nomad, atop a spoil board, to place the dowel holes.

@SkyeFire There are no stupid questions. The registration holes are drilled first using a corner of the stock as zero. Model your stock, use its center as reference and make the holes. Once they are done, these become your new reference for zero. I use the quick position center as my new x, y zero. The holes are equidistant from the center of the stock.

I learned a lot with this project. Being able to simulate jobs has allowed me to study different strategies and see their impact on time and quality. I highly recommend learning Fusion 360. It’s free and very powerful.

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