Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 15 of 16
Thread: Wear testing of saw teeth
-
21st May 2015, 12:39 AM #1
Wear testing of saw teeth
As part of my ongoing inquiry into the technical side of saw making I thought to try making some images of saw teeth given that the imaging of saw files went as well as it did. Here's some preliminary shots.
saw tooth pictures 052018a_Page_1.jpgsaw tooth pictures 052018a_Page_2.jpgsaw tooth pictures 052018a_Page_3.jpgsaw tooth pictures 052018a_Page_6.jpgsaw tooth pictures 052018a_Page_7.jpgsaw tooth pictures 052018a_Page_5.jpgsaw tooth pictures 052018a_Page_4.jpg
I can tell that my filing technique has improved from #2. I don't know what's going on with the LN gents saw - all of the teeth look like this.Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
-
21st May 2015 12:39 AM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
21st May 2015, 12:47 AM #2GOLD MEMBER
- Join Date
- Jun 2014
- Location
- Seattle, Washington, USA
- Posts
- 1,857
Is there anything empirical going on here? Like have these saws all been subjected to the same amount of use in the same material or something?
Or are you literally just experimenting with the images?
-
21st May 2015, 12:50 AM #3
-
21st May 2015, 12:52 AM #4GOLD MEMBER
- Join Date
- Jun 2014
- Location
- Seattle, Washington, USA
- Posts
- 1,857
Cool! Interested to see how it develops.
-
21st May 2015, 12:56 AM #5
I'm thinking of taking a particularly abrasive type of wood and making the same number of cuts with each saw to get a feel for the effects on the teeth. I need to find a large enough piece of wood to give me room to do enough cuts to create some visible wear however. Mesquite is a cutting edge killer but it's hard to find bigger pieces that have good uniformity.
MDF would be a cheap and uniform material, any thoughts?Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
-
21st May 2015, 11:12 PM #6GOLD MEMBER
- Join Date
- Apr 2012
- Location
- Sydney
- Posts
- 1,503
Just to be clear, is the black part the tooth or the gullet?
Will be interesting to see what happens.
-
21st May 2015, 11:22 PM #7Deceased
- Join Date
- May 2008
- Location
- Australia
- Posts
- 2,357
The black area is the saw tooth gullet.
-
21st May 2015, 11:42 PM #8
What about particle board (chip board)
It's consistent yet aggressive on teeth and plentiful
-
22nd May 2015, 12:57 AM #9
Sorry, forgot to note that these are bright field images,the background is white and the tooth is dark. This method allows visualization of the tooth edge where cutting takes place. Instrumental magnification is 40X if I remember correctly. Same as used for the files.
-
23rd May 2015, 12:55 AM #10GOLD MEMBER
- Join Date
- Apr 2012
- Location
- Sydney
- Posts
- 1,503
Ok. That makes more sense now.
-
23rd May 2015, 03:13 PM #11
-
28th May 2015, 08:48 PM #12
Hmmm, this is going to be an awfully difficult experiment to 'control', Rob! I do commend your desire to investigate the properties of saw plate material, it's a question that often crosses my mind, particularly as I sharpen saws that are clearly harder to file than the run of the mill saw. I ask myself 'is it really worth all this effort?' But a I've said on a few occasions, I think you'd have to use a saw heavily & consistently to detect any difference in durability. The hardness or otherwise of saw plate is moot for most woodworkers these days, because they simply don't use their saws heavily enough for edge-retention differences to really show, imo. Still, it would be interesting to have a test that picks up any clear differences in longevity of edge that equates to plate toughness, to satisfy curiosity, if nothing else.
Cheers,IW
-
28th May 2015, 10:19 PM #13Deceased
- Join Date
- May 2008
- Location
- Australia
- Posts
- 2,357
Rob. Is the LN Gents saw fitted with an 0.015 blade.
Stewie;
-
29th May 2015, 10:04 AM #14
Yes. It was sold to me as un-used and it looks as if it's true. The roughness does not appear to be a diffraction effect as it doesn't go away with adjustment of the depth of focus. It also doesn't wipe or rub off. One side of the teeth is noticeably rougher than the other. Perhaps it was made that way or perhaps somebody mucked it up between the first sale and my hands.
Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
-
29th May 2015, 10:06 AM #15Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
Similar Threads
-
Bed wear
By Murray77 in forum THE HERCUS AREAReplies: 6Last Post: 18th March 2015, 08:36 PM -
Lathe bed wear
By morrisman in forum METALWORK FORUMReplies: 5Last Post: 15th September 2012, 11:12 PM -
Wear to buy
By Wooder at Home in forum WOODWORK - GENERALReplies: 0Last Post: 31st March 2009, 09:44 PM -
What do you wear in the workshop
By Redback in forum POLLSReplies: 25Last Post: 16th July 2005, 04:45 AM -
What do you wear when you're woodworking?
By craigb in forum POLLSReplies: 52Last Post: 6th March 2005, 09:26 PM