Re-toothing my panelsaw
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Tagged: panelsaw tpi
- This topic has 5 replies, 5 voices, and was last updated 8 years ago by Mathbone.
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15 March 2016 at 11:15 am #135641
Hi all!
I own a panel saw that is soooo coarse; 5- or 6 TPI! (I’m not used to thinking/counting in inches, so I had to calculate- and convert). The teeth are rip-pattern. The photo shows with a metric ruler.
I’d prefer a TPI in the range of 8 to 12 tooth per inch, so about double of what is currently on there. I have re-toothed a tenon saw once with moderate results, but skills are something to be improved by doing, so I would not be scared to take on that job.
Click here for full-res pictureBut my consideration is: when filing down the entire teeth, I would loose 1/4 inch of the blade which I find a waste I’d like to avoid. Is there any way to double-up on the current existing teeth? I was thinking that there might be a way to file the teeth right in the middle somehow? (Flattening the teeth slightly first of course)
I hope it is clear what I try to describe here? Anybody with recommendations?
Cheers, Igor
- This topic was modified 8 years, 1 month ago by Igor Kerstges.
- This topic was modified 8 years, 1 month ago by Igor Kerstges.
- This topic was modified 8 years, 1 month ago by Igor Kerstges.
- This topic was modified 8 years, 1 month ago by Igor Kerstges.
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what you propose is, i think, a geometrical impossibility.
the only way to double the number of teeth is to wipe it clean and start again.
however if i were you i’d leave it alone as rip saws go its not overly coarse.
a saw of that size is not meant for the fine work that a twelve tpi rip saw in a tenon saw is intended for.
its more for ripping boards for finishing with the plane.
looking at the picture the teeth look to be 90 degrees to the line of points i.e the toothed edge of the saw which can be a little jarring in use.
try tipping the teeth back 5 degrees (to 85) it makes for smoother operation although slightly less efficient. hope i’m not telling you what you all ready know.21 March 2016 at 11:14 am #135823Thanks for your responses! I have decided to file the existing teeth slightly tilted (as suggested by Daragh Holmes). My woodworking usually does not involve much ripping of large boards, so this is why I posted my question. If the saw still remains too coarse to handle, then I will consider to file crosscut pattern or refile new teeth..
Cheers, Igor
According to one book (I think Aldren Watson’s but I don’t have it handy) halving and doubling the tooth count are possible, but any other process would require a new tooth line.
To halve the count focus your file on every other tooth until they disappear (it is relatively easy to do this on accident if you aren’t watching what you are doing).
To double the count, joint of half the height off each tooth and file (or hacksaw as per Paul) a new gullet in every flat.
In both cases, it is necessary to make sure that you have gone down far enough that the set has disappeared too, so you don’t break of a tooth trying to set it the opposite from its original configuration.
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