Ok. My grinds are getting much better, even on both sides, but one thing is still giving me problems. The plunge cuts. I am grinding on a Grizzly, with a redone platen, edges radiused, etc. I grind from the same side of the platen with the arm horizontal. With the edge held downward, the plunge on the right is very nice. When I flip the blade over and do the other side, the plunge sucks. It doesnt seem to cut cleanly and the plunge is more of a tapered slope, rather than a sharp plunge. Any ideas??? I am grinding on the same part of the platen for both sides and fequently flip the blades over to keep them even. Any ideas?????
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Plunge cuts help needed!!!!
- Thread starter Taz
- Start date
- Joined
- Oct 2, 1999
- Messages
- 834
Taz,
Try cutting the "plunge" with a round or rat-tail file before you flat grind on the platen. Make both "plunge" cuts in your blank and then grind away. Just make sure to keep from hitting the "plunge" area with the belt.
That's about the best help I can give you besides practicing.
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Barry
Jones Knives
"NEW Knives"
http://albums.photopoint.com/j/AlbumIndex?u=126319&a=5922856
"For DUTY and HUMANITY!"
Curly, Moe, & Larry
Try cutting the "plunge" with a round or rat-tail file before you flat grind on the platen. Make both "plunge" cuts in your blank and then grind away. Just make sure to keep from hitting the "plunge" area with the belt.
That's about the best help I can give you besides practicing.
------------------
Barry
Jones Knives
"NEW Knives"
http://albums.photopoint.com/j/AlbumIndex?u=126319&a=5922856
"For DUTY and HUMANITY!"
Curly, Moe, & Larry
- Joined
- Dec 20, 2000
- Messages
- 871
TAZ:
It's hard to "show" how this is done on a forum. Give me a call. I'll bring you to my shop and show you how I do it.
717 266-6475
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Tom Anderson
Hand Crafted Knives
It's hard to "show" how this is done on a forum. Give me a call. I'll bring you to my shop and show you how I do it.
717 266-6475
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Tom Anderson
Hand Crafted Knives
- Joined
- Oct 2, 1999
- Messages
- 834
Taz,
Take Tom's offer and visit his shop. You can send me ALL of his secrets when you're done.
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Barry
Jones Knives
"NEW Knives"
http://albums.photopoint.com/j/AlbumIndex?u=126319&a=5922856
"For DUTY and HUMANITY!"
Curly, Moe, & Larry
Take Tom's offer and visit his shop. You can send me ALL of his secrets when you're done.
------------------
Barry
Jones Knives
"NEW Knives"
http://albums.photopoint.com/j/AlbumIndex?u=126319&a=5922856
"For DUTY and HUMANITY!"
Curly, Moe, & Larry
Tom, I will give you a call when I get back to college before my semester starts going haywire on me! If you get the York Dispatch, I was on the front page on Nov 2 throwing the hammer. Track season eats up my time and weekends, so I would have to come over early in the semester. I would love to see you grind. I saw your site and really like your designs.
I will try to salvage the 2 blades tomorrow, but if not, I still have 4 pieces of D2 ready to blank and grind. I'd rather do them over than give my customers blades they might not be satisfied with.
I will try to salvage the 2 blades tomorrow, but if not, I still have 4 pieces of D2 ready to blank and grind. I'd rather do them over than give my customers blades they might not be satisfied with.
- Joined
- Sep 26, 1999
- Messages
- 4,486
You can still salvage the blades by cleaning up the plunge lines with a file and sandpaper.I used to do this allot when I couldnt get the plunges even on the grinder.You can just scribe a line even on both sides then use a round file and work your plunges back to the marks...
Bruce
------------------
Bruce Evans Handcrafted Knives
The soul of the Knife begins in the Fire!!!!!
Member of,AKTI#A000223 and The American Bladesmith Society
Bruce
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Bruce Evans Handcrafted Knives
The soul of the Knife begins in the Fire!!!!!
Member of,AKTI#A000223 and The American Bladesmith Society
Well, I am making 2 more blades and I hand cut the plunges with hand files with these. Only prob is my grizz bit me. Contact wheel caught the edge of the blade, flung it under the contact wheel and my thumb got caught between work rest and belt. Half my fingernail is gone and a lot of skin, so I wont be grinding soon.
- Joined
- Sep 23, 1999
- Messages
- 5,855
Tim, are you grinding the plunge cut first, or after you've done the rest of the grind?? Also, are you trying to finish the plunge cut all at once?
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Take care!! Michael
Always think of your fellow knife makers as partners in the search for the perfect blade, not as people trying to compete with you and your work!
http://www.nebsnow.com/L6steel
Buzzards gotta eat, same as worms!!!
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Take care!! Michael
Always think of your fellow knife makers as partners in the search for the perfect blade, not as people trying to compete with you and your work!
http://www.nebsnow.com/L6steel
Buzzards gotta eat, same as worms!!!
Mike, I don't know?? I just grind and try to stop at the same point each time on both sides. Now, I hand file the plunge cuts before I grind the bevels. I might hand file these 2 neck knives, cuz I aint grinding till my thumb heals. And I need more belts. I will salvage the 2 knives, one will become a hunter/skinner like the one I did for my uncle, but will be a little more pointy. The other will become whatever I make it!
- Joined
- Sep 26, 1999
- Messages
- 4,486
Taz,Sorry to here that your grider hooked and bit you,hope it heals soon so you can get back to grinding,
Bruce
------------------
Bruce Evans Handcrafted Knives
The soul of the Knife begins in the Fire!!!!!
Member of,AKTI#A000223 and The American Bladesmith Society
Bruce
------------------
Bruce Evans Handcrafted Knives
The soul of the Knife begins in the Fire!!!!!
Member of,AKTI#A000223 and The American Bladesmith Society
- Joined
- Dec 20, 2000
- Messages
- 871
TAZ:
Sorry to hear about your thumb. We'll discuss some shop safety issues when you stop over. (I should know - almost sawed one thumb off and nearly snapped the other in half with a disc grinder!)
I don't read the York Dipatch - just the occassional knife magazine in between tool and supply catalogs.
I hope you don't expect any "magic tricks" like the kind Jones' have suggested. (Really, guys - I'm no wizard!) I do eveything by honest work and a bit of forethought. Just keep asking yourself "What's a better way?"
You might be surprised by how long it took me to come up with my own little "tricks." Every year, I look back and remark at how stupid I have been to overlook the "simple" and the "obvious." (Working alone is really hard to do sometimes. Not enough people for a "think tank!")
In my career as an engineeering consultant, I've often asked myself about the issue of efficiency. The motto I have adapted is: "Work smarter, not harder!" Make someone's task easier, and he'll have more energy to apply somewhere else.
Taz, I hope to hear from you soon!
Barry and Phil: You're welcome to stop in anytime!
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Tom Anderson
Hand Crafted Knives
[This message has been edited by Tom Anderson (edited 01-01-2001).]
Sorry to hear about your thumb. We'll discuss some shop safety issues when you stop over. (I should know - almost sawed one thumb off and nearly snapped the other in half with a disc grinder!)
I don't read the York Dipatch - just the occassional knife magazine in between tool and supply catalogs.
I hope you don't expect any "magic tricks" like the kind Jones' have suggested. (Really, guys - I'm no wizard!) I do eveything by honest work and a bit of forethought. Just keep asking yourself "What's a better way?"
You might be surprised by how long it took me to come up with my own little "tricks." Every year, I look back and remark at how stupid I have been to overlook the "simple" and the "obvious." (Working alone is really hard to do sometimes. Not enough people for a "think tank!")
In my career as an engineeering consultant, I've often asked myself about the issue of efficiency. The motto I have adapted is: "Work smarter, not harder!" Make someone's task easier, and he'll have more energy to apply somewhere else.
Taz, I hope to hear from you soon!
Barry and Phil: You're welcome to stop in anytime!
------------------
Tom Anderson
Hand Crafted Knives
[This message has been edited by Tom Anderson (edited 01-01-2001).]
Thanks for the tips, Tom!! lol. I know what caused the booboo. Worn out belt I was pushing to hard on to get more life out of and tool rest had slowly creeped too far away from contact wheel, leaving a big gap! I learned my lesson. I am ordering more 36 grit belts tomorrow.
Tom, any help is greatly appreciated. I have never seen a real knifemaker at work, so I make up stuff and methods as I go until I think of a better way. i learn by trial and error a lot. Now, I am cutting the plunges with hand files before grinding. Seems lots easier, almost as fast, too. I use coarse files, then go to finer ones. I learned to grind slower and not to rush it.
Tom, any help is greatly appreciated. I have never seen a real knifemaker at work, so I make up stuff and methods as I go until I think of a better way. i learn by trial and error a lot. Now, I am cutting the plunges with hand files before grinding. Seems lots easier, almost as fast, too. I use coarse files, then go to finer ones. I learned to grind slower and not to rush it.