For those not quite perfect body tube cuts. Got the idea from a recent Sport Rocketry showing something similar, but where no links to STLs were given.

In the default script configuration the changeable dimensions are set for a LOC 29 mm motor tube with both parts of the tool connected with sandpaper in between using a #6-3/8" machine screw with washers on both sides and a wingnut on the top side.

Attached Thumbnails

 

Attached Files

Body Tube End Finishing Tool Generator.zip (967 Bytes, 7 views)

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I saw this beautiful girl on the bus, but she looked sad. I asked her what was wrong. She said, "Well, my analyst said I'm a nymphomaniac, but I only like Jewish cowboys... by the way, my name is Dianne." I said, "Hello, Dianne. My name is Bucky Goldstein." - Steven Wright

These kinds of tools work pretty well too.

https://estesrockets.com/products/copy-of-sanding-bar

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-Wolfram v. Kiparski
NAR 28643 - TRA 15520
MTMA Section #606 President

I use one of those, with a coupler in the end of the tube, to put the final touches on the cut end. My cuts are done using a homemade Kuhn Cutter, which usually leaves an edge that requires very little sanding. Also, I use the coupler in the tube to make it more rigid to support the cutting.

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Lee Reep
NAR 55948

Projects: Semroc Saturn 1B
In the Paint Shop:
Launch-Ready:KFD Mini Satellite Interceptor

Me too, having come up with an exact copy independently before I even knew about that cutter although I use a very large bulldog clip to hold the tube stop. For high power tubing I use an electric scroll saw with an aluminum angle extrusion backstop with a setback just over the tube wall thickness and with a bulldog held stop just like on the Kuhn Cutter. I rotate the tube to cut it. Haven't tried my miter saw with an appropriate blade.

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I saw this beautiful girl on the bus, but she looked sad. I asked her what was wrong. She said, "Well, my analyst said I'm a nymphomaniac, but I only like Jewish cowboys... by the way, my name is Dianne." I said, "Hello, Dianne. My name is Bucky Goldstein." - Steven Wright

The 3D printed tool easily makes sure the end of the tube is perfectly square.

__________________
I saw this beautiful girl on the bus, but she looked sad. I asked her what was wrong. She said, "Well, my analyst said I'm a nymphomaniac, but I only like Jewish cowboys... by the way, my name is Dianne." I said, "Hello, Dianne. My name is Bucky Goldstein." - Steven Wright

So does our method.

__________________
-Wolfram v. Kiparski
NAR 28643 - TRA 15520
MTMA Section #606 President

Good to know.

__________________
I saw this beautiful girl on the bus, but she looked sad. I asked her what was wrong. She said, "Well, my analyst said I'm a nymphomaniac, but I only like Jewish cowboys... by the way, my name is Dianne." I said, "Hello, Dianne. My name is Bucky Goldstein." - Steven Wright