Trap

Walt2

Walt2

Joined
Mar 13, 2001
Messages
1,157
I have seen guys mention this problem before. Today I got caught in it. I am talking about the trap between the work rest and the belt while grinding on a thin 01 blade. Jammed it between the work rest and belt, bam, and the belt was broken into and bogged the motor down. I finally ground the blade enough to salvage it, but it is now thinner in the spine area than I had planned.
 
That Sucks!!!!!

Been there done that myself,just be careful next time.

Doesnt it give a good wake up scare when the belt breaks :eek: :D
Glad you didn't get hurt.
Bruce
 
I made a work rest with a lip about .062" tall and about .010" thick and set it to almost touch the grit on the belt. If I don't lift the blade up and over it it can't get caught.
 
Hey, there's another benefit to grinding freehand! :D Don't worry man, we all have a few gray ones from the same experience. Just be careful, you sure don't want your hand in there.
 
ddavelarsen said:
Hey, there's another benefit to grinding freehand! :D Don't worry man, we all have a few gray ones from the same experience. Just be careful, you sure don't want your hand in there.
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hey hey hey that's Grey ones :D I'm not in anyone's hair well the wife don't count :D

you can grind into the work rest some also, so it basically wrap's around the platen. this way you have one side it can't get down by. :)
 
My work rest is done the way Dan suggested. Ground in to where it wraps around the platen and belt, but it still got into the gap between the platen/belt, close to the tip. This is a pretty thin blade, a small pearing type of kitchen blade. I haven't figured out this freehand grinding yet. I can't keep the blade from fluctuating up and down unless I touch the belt awful lightly. I guess it takes a lot of practice.
 
Dan Gray said:
you can grind into the work rest some also, so it basically wrap's around the platen. this way you have one side it can't get down by. :)
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Good idea Dan. I did something like that with my disc sander but it's a great idea for the grinder rest too.
 
Walt2 said:
I can't keep the blade from fluctuating up and down unless I touch the belt awful lightly. I guess it takes a lot of practice.
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Ah, that's where variable speed is king! It really cuts into the learning curve and saves belts and gives ultimate control and and... You get the idea. If you can slow down the belt you'll see a huge difference. I'm just guessing of course, probably stuck my foot in mouth again tonight! :D
 
I don't have a variable speed motor but I am using a set of 3" step pullies. The slowest combination seems to take too long to get anything done when using coarse grits, so I usually use the mid speed range.
 
Walt2 said:
My work rest is done the way Dan suggested. Ground in to where it wraps around the platen and belt, but it still got into the gap between the platen/belt, close to the tip. This is a pretty thin blade, a small pearing type of kitchen blade. I haven't figured out this freehand grinding yet. I can't keep the blade from fluctuating up and down unless I touch the belt awful lightly. I guess it takes a lot of practice.
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use the organic tool-rest if you don't have one you'll need to grow one. :p
it's the best excuse to have a big belly :D

get close, arms against your sides, and the heal of you hands on your belly.. :D
 
I have been freehand grinding for over 20 years and would never risk using a fixed rest. In industrial safety parlance that is called a "pinch point" and as such must be guarded to avoid injury.

What I use instead of a rest is a wooden push stick in one hand to support the blade with my other hand on the handle guiding the knife. Keep your elbows tightly pressed against your sides and there will be enough stability for control......I bet there are some people out there trying to figure out how to keep the elbows pressed tightly against the ribs when they are sitting on their stools in front of the grinder. It can't be done, you have to stand up to grind safely.
 
george tichbourne said:
I bet there are some people out there trying to figure out how to keep the elbows pressed tightly against the ribs when they are sitting on their stools in front of the grinder. It can't be done, you have to stand up to grind safely.
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I kinda respect my family jewels a little too much to risk a flying blade skewering them to the stool.....OUCH!

Doc
 
george tichbourne said:
I have been freehand grinding for over 20 years and would never risk using a fixed rest. In industrial safety parlance that is called a "pinch point" and as such must be guarded to avoid injury.

What I use instead of a rest is a wooden push stick in one hand to support the blade with my other hand on the handle guiding the knife. Keep your elbows tightly pressed against your sides and there will be enough stability for control......I bet there are some people out there trying to figure out how to keep the elbows pressed tightly against the ribs when they are sitting on their stools in front of the grinder. It can't be done, you have to stand up to grind safely.
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I know a few guys that do it setting with a rest :eek: ouchie if you loose it.
(by way of it being grabbed from now paying attention to where the edge is.)
it only took me one good catch to not to want to sit while grinding. :(
 
Viva la Freehand!!!

Pushstick eh? I guess that would keep me from burning my fingertips.

"I know a few guys that do it setting with a rest ouchie if you loose it."

Never thought of that. I flat-grind standing up, but hollow-grind sitting down (nature of the grizzly). Ouchie indeed. :( :D
 
A couple of years ago I was using a Crapman 2x42" grinder that I modified by making a heavier platten and cutting the top of the cast iron belt shroud so that I could grind on the wheel for handles and such. Well I was grinding a small blade freehand without the rest on and the bottom of the belt shroud had about a 1/2" gap between the bottom roller and the cast iron shroud. Well as I was grinding the belt grabed the blade and sucked blade and my thumb into the belt and wheel. After I got the bleeding stoped I cut out that part of the shroud. I won't have a grinder with a work rest or pinch point, still got the scar from that one.
 
Burchtree said:
Viva la Freehand!!!

Pushstick eh? I guess that would keep me from burning my fingertips.

"I know a few guys that do it setting with a rest ouchie if you loose it."

Never thought of that. I flat-grind standing up, but hollow-grind sitting down (nature of the grizzly). Ouchie indeed. :( :D
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:D can you say self vas ec to my :eek: :( :)
 
I wear a thin pair of gloves then I wrap duct tape around my fingers. I still get burned and will lear to use a push stick. I also use light pressure to clean areas as I go so it wont heat up as much. Then when there cleaned up enough I go back to burning my fingers :D
 
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