Gentlemen, with the help of the samples I received I went to our county library and fabricated some nearly exact copies. After some of the things said about copyright infringement Iím a bit leery about posting the design file (though, as one person pointed out, they came out in 1985, meaning that any trademark is likely long expired). Iím open to any guidance; the design file is only 40kb..
The 3D printer support person suggested we construct a design file instead of of scanning the sample I brought. As he pointed out, it was simply two columns (one wide, thin oneóthe discóand one small diameter tall oneóthe post), and after taking all dimensions with a pair of calipers he built a design file in a couple minutes (as opposed to the half hour or more that a scan would have taken).
We then ran off some samples out of a biodegradable but fairly strong plastic (he had a wide variety of different materials there). The samples were perfect, so I asked him to run off more (and Iíve forgotten whether I specified 25 or 50). That represented several hours of printing, and I just received word they are ready. I havenít patterned any yet or checked the weight of the copies relative to the originals.
My total out of pocket cost, based on grams of plastic used, is $1.75. Jim, Michael, Iím happy to send you some of the copies I ran off.
I have a 3D printer. Just made a hull trimmer similar to the one on Ebay, works pretty well.
The great thing about additive manufacturing is that complexity is free, so I was easily able to add a ramp to help peel the hull trimming off and also cover the blade so if you grab onto it you won't puncture yourself:
How long is the pin on the insert? I could easily make a bunch of these, I did this one in about 10 minutes, from starting the design to finished print:
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