20 February 2019 at 1:50 pm #555241
I am about to try to recut teeth on two saws as per Paul’s instructions. I will do a 16tpi dovetail saw, as well as convert a 6.5 too Disston into 4tpi. I will do the larger saw first, because I am expecting it to be much easier.
Did any of you try this based on Paul’s method? I would appreciate if if you could tell me about some issues you have encountered in the process.
Already I am having issues with my junior hacksaw. I got a brand new Bahco 268 saw for this. The adjustment mechanism is housed in a plastic square that is meant to withstand the tensioning of the blade. I don’t get this. I can’t seem to be able to keep the blade center, it just flexes because the adjustment mechanism has room for movement within the plastic part. I started making the same jig like in Paul’s s video, but the bend in the saw makes it cut at an angle. Any ideas how I can remedy this?20 February 2019 at 10:54 pm #555257
Also, I just realised that Bahco blades dull after cutting only a few millimetres into saw steel. Are there any recommendations for steel blades for this job?21 February 2019 at 11:28 pm #555274
take your time when laying out and cutting your guide.
A very meticulous prospect @ 16, i’ve done 14tpi .
you’ll get it after a few
Protect the line.22 February 2019 at 12:43 pm #555287
Before you commit too heavily to this project, you should bear in mind that totally retoothing that Disston saw will wear out several files, each of which could cost you as much as a vintage Disston saw in reasonable condition.
4 TPI saws are very uncommon, a fact that might suggest how generally useful the oldtimers found them. Most old rip saws have 5 1/2 TPI.
Dave25 February 2019 at 7:11 pm #555362
I did the recutting of an old tenon saw following exactly the method that Paul explains in his video, and it worked almost perfectly. I say “almost” because some of the teeht finished very slightly smaller than the adjacent ones, and I really think that was due to my skill in making the guide for cutting, not the method itself. I used a piece of oak to make the guide and a Bahco blade on a Dexter junior hacksaw, prepared as Paul suggest in his video, to do the cutting. I converted a 10 tpi saw in a 12 tpi saw this way. The saw cuts now very well, and my skills in woodworking and tool restoration are on the very-apprentice level yet.
Dexter tools can be called anything but good tools, but it worked well. Cuts were squared and straight. For teeth shaping I used a 4-188-05 Bahco file. I could have used a bigger file, but this one was the one I had at hand at the moment, so I used it.
As Dave says, reshaping big teeth will cost you at least a pair of files, so I would consider looking for a saw in better shape before. Steel can be much harder in some saws than in other, so I think that performance of files or hacksaw blades can be different. A good saw plate will fight with the tools you use in recutting.
The experience of coming back to life an old good saw is very satisfying, anyway. I leave here some photos of the work I did. Sorry, but I don’t have a pic of the finished teeth. It could have been made better, but it was the first one. Next one will be better.
- This reply was modified 5 months, 3 weeks ago by Julio T..
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