1 Topic by into3dllc

  • into3dllc
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Topic: v1.2 assembly problems

We have received a v1.2 kit, and are having assembly issues. It looks like between the v1.1 and v1.2 kits a metal bushing for the end of the pipe nipple closest to the gearbox was removed, and the placement for the center wood support was changed, but the center hole in that support remained the same size.

So onto the problem, with the current set of instructions the coller and set screw rest in the hole of the center support. When rotating the auger the set screw interfers with the too small hole and does not spin freely. Also, the thrust bearing is too large to slide into the center hole (although upon further thought this may not be a problem at all).

I was going to just enlarge the supports hole by 1/16th of an inch, but thought I should post here first to verify I am assembling this correctly. Pictures will follow this post a little later tonight.

2 Reply by elmoret

  • elmoret
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Re: v1.2 assembly problems

into3dllc wrote:

We have received a v1.2 kit, and are having assembly issues. It looks like between the v1.1 and v1.2 kits a metal bushing for the end of the pipe nipple closest to the gearbox was removed, and the placement for the center wood support was changed, but the center hole in that support remained the same size.

The only change between v1.1 and v1.2 is the gearmotor, and some tweaks to the instructions. The hardware remains the same.

into3dllc wrote:

So onto the problem, with the current set of instructions the coller and set screw rest in the hole of the center support. When rotating the auger the set screw interfers with the too small hole and does not spin freely.

Usually this means the assembly is not center in the support. You may need to sand the inside of the hole as well, though in my experience this is not necessary if the assembly is centered properly and the setscrew is tightened fully.

into3dllc wrote:

Also, the thrust bearing is too large to slide into the center hole (although upon further thought this may not be a problem at all).

I was going to just enlarge the supports hole by 1/16th of an inch, but thought I should post here first to verify I am assembling this correctly. Pictures will follow this post a little later tonight.

Thrust bearing should not slide into the hole. Enlarging the hole is fine but shouldn't be neccessary.

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3 Reply by into3dllc

  • into3dllc
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Re: v1.2 assembly problems

The set screw is completely tightened and biting into the auger.....but....as it compresses into the auger the coller cocks ever so slightly on the auger shaft. In combination with this the hole has only a few thousands clearance with the set screw. So as the auger spins with the coller slightly cockeyed in both the full toward position (the coller in contact with the front most flange), and fully compressed position (the coller in contact with the thrust bearing), the coller attempts to press flat against the above mentioned contacts, slightly twisting the auger in the pipe, causing binding in the pipe. Also...the 2-3 thousands clearance between the set screw and the wood has also closed on account of the auger twisting and the set screw comes into contact with the inner diameter of the hole in the support increasing the torque necessary to spin the shaft. The hole was also routed imperfectly so there is a small lip which the screw eventually catches on in its rotation and finally the auger is no longer able to rotate freely.

This is all in spinning by hand and observing the minute changes in the assembly. In repositioning the coller and retightening the set screw...no matter how many times I do it its all ways cockeyed. I think I'm going to make the hole a bit bigger and assemble it completely and just see if it works and go from there.

4 Reply by into3dllc

  • into3dllc
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Re: v1.2 assembly problems

All of the above observations are with the four flange bolts installed as well as the nylon spacers. Everything appears concentric, all of the changes are ever so subtle as you spin the shaft, but with such small clearance it all binds in the supports hole.

5 Reply by elmoret

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Re: v1.2 assembly problems

Sounds like opening up the main hole will solve your problems then.

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6 Reply by beastieb2000

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Re: v1.2 assembly problems

I have came across the same problem with mine. The set screw barley touches the wood block. I think I am going to make the hole bigger ever so slighlty. Some of the worse direction ever. The video on the link dosent help really since its for the first version. Also I dont like how I have to cut a washer to make a key for the price we all paid I think this should of been done prior to shipping.

7 Reply by elmoret

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Re: v1.2 assembly problems

beastieb2000 wrote:

Also I dont like how I have to cut a washer to make a key for the price we all paid I think this should of been done prior to shipping.

I had to make some choices in order to get kits out on time. Cutting/filing the washer takes only a few minutes for each backer, but with 470 kits, that's about 24 hours of work for me. The kits ended up shipping on time, something only 16% of Kickstarter projects manage to do.

I've since changed to dowel pins. You can pick one up for free from the store, if you'd prefer.

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