Dovetail jig, optimised for use with thin stock
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Dovetail jig which allows for easy and accurate marking of pins from tails, albeit with a fixed saw thickness offset.
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- Printables
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- Creative Commons — Attribution — Noncommercial — Share Alike
I recreated the model in PTC Creo and changed it to allow thinner stock and full access for marking out the pins. The idea is based on the “Shawn shim” Rob Cosman uses, by offsetting the parts when marking out pins from tails, by the thickness of the saw, a joint can be made which fits together without much paring.
I tried these parts on a single test joint, on stock 60mm wide and 9mm thick. See picture.
Seems to work pretty quickly, I did do a little bit of paring with a chisel.
Accuracy of the geometry that determines the offset is critical, and I had some distortion of this area and some “burrs” here and there which I removed with a file, possibly impacting dimensions. Will see if I maybe change to a simpler geometry, for a better defined offset.
Title of the parts are a play on "Cosman" and "dovetail", sorry :)
Text on left part is mirrored, because I used the “mirror part” feature in Creo to create that part.
To guide the saw to make the actual test piece, I used this excellent jig:
https://www.printables.com/model/199398-dovetail-saw-jigs-for-hand-cut-dovetails
Works really well, recommended.