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Douglas Fir 2 X 6 Deep Back Dovetail Saw

author-gravatar Dylan Sep 14, 2015

Submission for the /r/woodworking 2x challenge.

My father has a birthday later this month so I decided to build a dovetail saw for him. 

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Cuts much better than I had hoped for. The handle isn't too bad either. 

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

The finished product. Happy birthday pops!

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

2x6 douglas fir for home depot

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Planed down to 7/8" 

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Pistol grip handle pattern I found on at www.tgiag.com

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Drilling the radii, my forstner bit set only goes up by 1/8" increments, close enough

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

All drilled, ready to cut the handle out on the bandsaw

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Rough shaping on the sander

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Grain orientation is important, looks good.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Marking the slot for the blade

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Cutting the slot for the blade

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Shaping the handle with rasps and files

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

More shaping

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Finished shaping.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

So we have the handle of the dovetail saw, now we need some steel for the blade and some brass for the back. This steel came coiled, and cutting the tie of the coil was legitimately scary, as at this point that steel is essentially a 50" x 6" razor blade, and it doesn't want to be coiled.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Blue tempered 1095 spring steel, rc48-51 hardness. Rough layout of the blade within the spring steel.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

I made 5 or 6 shallow passes with the angle grinder because I didn't want it to get too hot and ruin the temper. The steel holding it in place also acts as a heat sink. 

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Shallow cuts

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

After a few passes I just snapped it off.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

This is the muscle of the operation, the Foley 385 Retoother, I found it on craigslist in a lot of Foley sharpening equipment, had to go to Reading, PA to pick it up, but I got a good deal.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

And doing a bit of routine maintenance work before running the machine and I snap not one but both set screws linking the flywheel to the main shaft. Well this just sucks.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Drilled a hole in a piece of steel and welded it to the set screw, backed it out as much as I could then cut the steel. 

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

... I hate set screws... keyways we like...

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

This is the punch and die and will be creating our new saw teeth. They were pretty beat up, so it took a bit of grinding and filing to get them in good shape

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

This is the carrier bar and the ratchet, a feed pawl can be set to engage with every notch or every other, ect., there are 9 ratchets in the set, I have 7 I think. I can cut 3.5 ppi (points per inch) up to 15. 

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Here is the carrier with the steel attached going through the retoother. Oh, I have 2 of them, because I had to buy the whole lot. 

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Where the toothing happens

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

A simple vinegar bath to remove the blue from the steel

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

What is a backsaw without a proper back? I tried to build a metal break to fold the back but either my design was flawed or I am not strong enough to bend 1/8" brass, not sure which is worse...

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Filling to get the two pieces to the same size

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

So I used JB Weld to epoxy the brass pieces to the steel blade, and also drove three 3/16" brass pins through the brass and steel to maintain the proper alignment. Oh, you need a carbon steel bit to drill carbon steel. The blade itself is only .020", but you will ruin titanium bits, they will just burn up, and probably ruin the temper on the blade. I bought a spade bit, it was $13 from amazon.com. 

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Filing down the pins

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw
Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Cleaning up the back

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Viola

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Cutting relief for the brass back

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Need to notch the blade so it will fully set in the handle

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Notched

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Drilling holes for the brass screws

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Makeshift saw vise out of plywood to file the teeth.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Filing... I had never done this before, and was kind of intimidated, but thank you Paul Sellers for the instructional videos. I filed a progressive rake à la M. Sellers, rip profile.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Introducing set to the teeth, I used the lowest setting, so the least amount ot set

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

60 Year Special

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

15 ppi

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Tung oil on the handle. 

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Test cut.

Photo of Douglas Fir 2 X 6  Deep Back Dovetail Saw

Not bad...

4 comments

Impressive!! Not sure what I enjoyed more, the final product or reading each description. Felt like I was right there along for the ride with you. Please post more of your work! An inspiration to us all.

Ps I'm actually in need of a new saw. 

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