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Coping Bowsaw

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Blog series by MikeB_UK updated 01-15-2021 10:53 AM 5 parts 2244 reads 22 comments total

Part 1: Getting started - Handles

01-07-2021 11:17 AM by MikeB_UK | 2 comments »

Spurred on by Dave’s coping saw and shamelessly nicking some ideas from Mads I decided to have a go myself, cheers for the advice and suggestions guys. I jotted these notes down as I made it so everything is in the order I did it.Hand tools only and with no plan and very little clue as usual. Feel free to comment/criticise. Grabbed some branches that are about the right size, birch for the frame and apple for the handles. Shape the apple into slightly tapered octogens, just used a...

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Part 2: Frame

01-07-2021 11:23 AM by MikeB_UK | 2 comments »

Onto the frame, rive the birch (random piece of metal used as an ad hoc froe). And make the blank with a drawknife and a couple of planes. Mark out the handles. And cut to very rough size. Clean up with rasps, spokeshave and chisel, just need to get to more or less the final profile so I can test & tweak it. Make the crossbar in pretty much the same way. Chop out the mortices in the handles. Test fit And that’s about it for the rough frame.

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Part 3: Fit the handles to the frame

01-07-2021 11:29 AM by MikeB_UK | 2 comments »

On tto fitting the handles to the frame. Work out what angle the handles should go in at. Not quite 90 degrees because of the slight curve from crossbar to where the handles go. Drill the holes. Test fit Mark up where the cuts are going to go to fit the saw blade. Cut them, had to widen the one for the pins with some needle files as my hacksaw blade wasn’t thick enough. Quick test cut to make sure I’m not completely wasting my time, seems to work. Mostly at least, fra...

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Part 4: Finish

01-07-2021 11:37 AM by MikeB_UK | 7 comments »

Need some final shaping and making the whorl & toggle Shape the handles clamped together so they end up the same size/shape. And just hack bits off with a knife & rasp until I’m happy with the final shape. Onto the crossbar, much the same process. Put it together to see how it looks. Next up is the whorl, chop another piece out of the birch. And cut the mortice. Shape the curve and cut off the waste. Measure up for the toggle. Everything is more or l...

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Part 5: Test Drive

01-15-2021 10:53 AM by MikeB_UK | 9 comments »

Well, I needed somewhere to put it and what better tool to cut out a rack than a coping saw? Not aiming for anything fancy here as it’s just a prototype and will probably get rebuilt in a month or 2. So, start with guing and milling up so some scrap, mark some likely looking curves on it. And cut, saw handles remarkably well, it’s a lot easier to keep it parallel than a shop bought one and it’s easy enough to rotate the blade withought removing the tension. Repea...

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