let's talk work rest bevel grinding jigs.

I have used it for a while now and I like it.I think it's closer to 8 inches wide then 6.I also have a large work rest and that helps.I also keep my work rest rubbed down with past wax and everything slides along nicely.
 
AkWildman said:
Ok my wife went out in the shoo and snaped some pics for me,sorry I can't show it with a blade in it but I think you get the idea,the pic with the file guide on the blade is from my wip,You put the guide on your blade and put that in the notch and put a clamp on the tang ,the bolts in the pic are screwed all the way down but I also use some longer ones with lock nuts under them for my shallower deg sets.Hope this helps Laurence.PS if my memory is correct it's 1/4 inch thick 2 inch angle by around 6 inches long.
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AK,
I see you have done a Scandi grind on a blade there. Any tips on making a Full Flat Grind with your baby? I get the keep making passes part, just wondering if there is any other experiences you can bestow on us?
 
rhinoknives said:
AK,
I see you have done a Scandi grind on a blade there. Any tips on making a Full Flat Grind with your baby? I get the keep making passes part, just wondering if there is any other experiences you can bestow on us?
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Laurence that's just my first bevel to take the edge down to 50 thousands then I back the deg back to 5 deg and finish to the 50 thousands edge,I will finish the grind after heat treating at 5 deg,to do a full grind on it I would go to 2 deg but I keep it at 5 due to the swedge.on that paticular blade a 5 deg bevel and a 20 deg swedge the grind lines meet perfectly in line with the point.
 

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One thing is you have to keep the back of the jig down on your work surface and don't rock it into the belt,just slide it nice and flat against the belt and work your grind,I myself like to work easy and finesse it taking my time and enjoy watching the bevels bring the blade into exsistance.
Just work smoothly and trust the jig and Bam before you know it your done.When working with the point to my right my left thumb is on the back of the jig with my fingers hooked through the c clamp and my right thumb is on the jig bottom putting downwards pressure at the same time putting s bit of controled pressure forward.
 
Akwildman when you have it locked in your jig how do you cool down the knife so it doesn't over heat? is there any way you would be able to get pictures with a knife in the file guide in your jig? does your file guide fit snug into the jig? sorry i have so many questions just really want to make myself a jig.
 
I don't have any pics at the moment and I'm up at work in Prudhoe bay,I get home in a week and 4 days and I can snap some pics and maybe shoot a video using it.The guide fits fairly tight and as mentioned before I alway index the guide to the same side of the slot so it's always the same.I can'tsay for sure but iI think the aluminum helps with the heat ,that being said when I feel things getting warm I just dunk the whole thing in my water bucket that sits on a stool next to me.The guide itself is easy to make.I used some old spring steel ,made two matching pieces locked them togeather drilled them,tapped one side and heat treated them,you do have to use a button head bolt so that it dosent interfere with the jig or over hang and impede the guide at the platen.
 
Heres mine a few years back

RATgrind.jpg


Still use the same bit of angle but now gone high tech by driling some holes thru and tapping for 8-32 screws i can put them thru to support tyhe knife and on laser balnks with the same shape and hole sets get a consistant placment

Heres a Crude demo

https://www.youtube.com/watch?v=c0H2OyaI7sU#t=961


keep meaning to do a posher one with 3" angle or even T section so i dont have to change side and reclamp
 
Here is the jig I built and 3 knives that were ground on it, both flat and hollow ground.
 

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Man I guess I need to make me one you all have some good results. I'm just getting started and have been using the work rest but just free handing it i guess

Sent from my SPH-L720 using Tapatalk
 
tomwatson said:
Here is the jig I built and 3 knives that were ground on it, both flat and hollow ground.
Click to expand...

Tom,
Thanks for chiming in with your pictures of your great folders and the one of the jig. Would you indulge us with a top shot of your work rest, I am interested in those two vertical pins, do those allow you to pivot the blade in side of the work rest?

Thanks.
 
Justin Presson said:
Man I guess I need to make me one you all have some good results. I'm just getting started and have been using the work rest but just free handing it i guess

Sent from my SPH-L720 using Tapatalk
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Justin,
My two cents here is to keep learning free hand for awhile, you will learn so much about how to shape steel These jigs are for us old farts! :3:
 
Pictures of the jig set-up with knife blade at the grinder, would be nice to go with this thread. I may just be dense but some of this I am just not seeing from the explanations! :confused2: Wildman, the aluminum jig with the bolts has got me scratching my head as too how it works!

I have a problem with grinding bevels because as a part timer, I don't do it all the time, so by the next time I have to grind a bevel on my next knife, my body has forgot some of what it learned!! I then have to get out the scraps and try and re-train my mind and body to do what it learned before!

I have thought of jigs but have never set down and really thought if fully through on how to with a jig that will allow for easy repeatability! The issue with being able to cool the blade is one of the obstacles that I never quite figured out how to handle!
 
C Craft said:
Pictures of the jig set-up with knife blade at the grinder, would be nice to go with this thread. I may just be dense but some of this I am just not seeing from the explanations! :confused2: Wildman, the aluminum jig with the bolts has got me scratching my head as too how it works!

I have a problem with grinding bevels because as a part timer, I don't do it all the time, so by the next time I have to grind a bevel on my next knife, my body has forgot some of what it learned!! I then have to get out the scraps and try and re-train my mind and body to do what it learned before!

I have thought of jigs but have never set down and really thought if fully through on how to with a jig that will allow for easy repeatability! The issue with being able to cool the blade is one of the obstacles that I never quite figured out how to handle!
Click to expand...

Ok I have about a week till I get home from work,get home next Monday night so Tue I will take some pics and shoot a video and post it.
 
C Craft,

A novice with a jig will beat the most experienced hand all day long, every day. Using a jig and is independent of frequency of grinding.

Jeff
 
True - Humans are proof that you can "screw up" anything in the most thorough of ways. A PhD acts as an accelerant in the process.

Jeff

Mudman said:
AND you can still screw up with a jig too. Ask me how I know? :biggrin:
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