A few Nights ago I think About the SVM 45 Tool.
I ordered a University Ball Joint M12 and a Threaded Sleeve M 12.
I cut the Shaft of the SVM 45 and make Metric Thread M 12 on it.
I turning all Things together.
It is for me the perfekt Solution to sharp my Knifes.
(http://up.picr.de/33606056he.jpg)
(http://up.picr.de/33606058az.jpg)
This solution will hit the USB leg, so I guess it is OK only for short knifes.
How would you deal with curved point or long knives?
Quote from: hunter on August 19, 2018, 06:08:11 PM
A few Nights ago I think About the SVM 45 Tool.
I ordered a University Ball Joint M12 and a Threaded Sleeve M 12.
I cut the Shaft of the SVM 45 and make Metric Thread M 12 on it.
I turning all Things together.
It is for me the perfekt Solution to sharp my Knifes.
Looks like an interesting concept.
In my head, I would think the pivoting movement would be blocked by the USB... but there may be enough room to maneuver?
It falls in line with some other ideas here....
(https://forum.tormek.com/index.php?action=dlattach;topic=3588.0;attach=2052)
... (the "4 Stop Collar" and the "Pin Pivot" setups).
As WolfY pointed out, anything sliding on the USB itself will have a limit when it hits the support leg of the USB... on the 4SC setup, I found that translates to around an 8" blade (depending on the shape)... so should cover most knives.
Anyway, like the thought... I found that having the jig "attached" to the collar gives greater control to the sharpening.
Maybe (if you want)... post a few second video of it in action.
Nice job! 👍👍
My longest Hunting Knife:
(http://up.picr.de/33612208bt.jpg)
Unscrewing:
(http://up.picr.de/33612211gf.jpg)
Another Solution:
(http://up.picr.de/33612216ac.jpg)
20° Angle:
(http://up.picr.de/33612214uy.jpg)
Space enougth:
(http://up.picr.de/33612215jf.jpg)
Looks good! Thanks!
Got an idea how to solve the hitting the USB problem.
Will post it later after sketching it up.
Hunter, I like your ideas.
I use the knife jigs in a different way from most users. If I was designing the jigs, I would use a fine thread for the shaft. I am well aware that Tormek would receive many complaints that having to adjust fine threaded jigs would take "forever", forever measuring in at several seconds.
I rarely adjust the knife jigs. I use two SVM-45 jigs, one with the small blade tool; one SVM-100; and one SVM-140. All of my knives are set in the jigs to a total Projection from the usb of 139mm. That means that to grind a fifteen degree bevel angle, the Distance between the usb and the grinding wheel remains constant. The same set up for my paring knife works accurately for my chef's knife. Instead of adjusting the Tormek and knife jig for every knife, I set the knives in the correct pre set jig. Occasionally, it is convenient to microadjust the jig to meet the 139mm standard. For this small amount, I would find a fine thread useful.
I see no point in taking the time to reinvent the wheel by changing the set up for each knife.
I fully realize that Tormek must make their jigs marketable for the average user. I also realize that we are not average users and are willing to modify our jigs to improve them. I am very pleased that we have this innovative spirit.
Ken
So I just had to...
Great Idee but for my Solution is inconvenient to change the Site of the Knife.
You have to unscrew every Time the Bolt of one End to change the Ball Joint at 180°.
Quote from: WolfY on August 21, 2018, 08:22:43 PM
So I just had to...
And I just have to...
Why two rods?
Rick
Quote from: hunter on August 21, 2018, 09:38:07 PM
Great Idee but for my Solution is inconvenient to change the Site of the Knife.
You have to unscrew every Time the Bolt of one End to change the Ball Joint at 180°.
Why unscrew? The half turn of the thread (while flipping side) of the jig will not effect too much. You can also check the real angle on each side and decide to what direction make the half turn, compensating for the jig error.
I have to check how much is the Angle after a half Turn on the other Side.
I am impressed obout your Idea.
Hunter and Wolfy thanks for presenting your great ideas. :)
Half turn of the M12 thread with default pitch 1.75 mm will change the bevel angle by almost 0.7 degrees. I have assumed 200 mm stone, 20 degrees bevel angle and 133 mm blade protrusion.
Jan
Quote from: Jan on August 22, 2018, 02:45:50 PM
Hunter and Wolfy thanks for presenting your great ideas. :)
Half turn of the M12 thread with default pitch 1.75 mm will change the bevel angle by almost 0.7 degrees. I have assumed 200 mm stone, 20 degrees bevel angle and 133 mm blade protrusion.
Jan
Thanks for your Answer!!!!
Quote from: Jan on August 22, 2018, 02:45:50 PM
Hunter and Wolfy thanks for presenting your great ideas. :)
Half turn of the M12 thread with default pitch 1.75 mm will change the bevel angle by almost 0.7 degrees. I have assumed 200 mm stone, 20 degrees bevel angle and 133 mm blade protrusion.
Jan
Thanks Jan for the exact calculation. I think it will only do good for the uneven angle of the knife jig :) After a couple of times I guess it will be easy to learn toward what direction to turn the knife.