Sliding Dovetails
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Hi Reno,
I don’t want to offend, but I’m pretty sure, this is a standard German (I imagine it says “Made in Germany” on the body) Gratsäge (saw) and a Grathobel (plane). Compare it to the one you can see here (http://ecemmerich.de/gesamtkatalog/) on page 28 (saw) and 11 (plane) or here: https://www.agrotinas.de/shop/articleimg.aspx?wg=4000&article=HB-0151&imgpos=3944 or just do an image search on google on “Gratsäge” or “Grathobel”. Also check out this video (https://www.youtube.com/watch?v=_GzfKY_bc6g), part 3 on a small series on these tools.
Best regards,
David13 September 2016 at 9:55 pm #140138That saw looks like what is called a “kerfing plane” or “kerfing saw” that is used to make a saw kerf in an edge of a board (around all four edges) before using another saw to resaw thin pieces. However the kerfing saws typically have a fence of some kind so that the distance of the saw blade to the edge is consistent.
It’s a stair saw. Frid explains how he uses it to cut sliding dovetails in his book. It has been awhile since I looked at it, but I think he explains how to make a stair saw if you don’t want to buy one like the one @davidr shows. Frid uses a dovetail plane, which is probably what is in the photo, to cut the male part of the joint.
Here’s my version of a sliding dovetail saw. The dozuki blade cuts on the pull stroke and can be raised or lowered. There is a substantial post on the side which helps push the saw against a fence that establishes the cut angle (I am left-handed).
[attachment file=140808]
There is a lot of surface area to ensure contact with the fence.
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