MEMBER ITEMS FOR SALE
Custom Knives | Other Knives | General Items
-------------------------------------------
New Posts | New PhotosAll Photos



Go Back   The Knife Network Forums : Knife Making Discussions > Custom Knife Discussion Boards > Tool Time

Tool Time Let's talk shop. Equipment, Tips & Tricks, Safety issues - Post it here.

Reply
 
Thread Tools Display Modes
  #1  
Old 12-23-2001, 09:16 PM
WinDancer
Guest
 
Posts: n/a
Anyone have a hollow grind form for sanding the grind area?


I was thinking [yup- there he goes again] about a form for sanding the hollow grind on blades.

Maybe a piece of pipe the same diameter as the wheel that could be covered with sandpaper and stuck in a vice. Then the knife could be run back and forth across the form to clean up the grind area.

Any ideas?

Dave
Reply With Quote
  #2  
Old 12-23-2001, 09:45 PM
DC KNIVES
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


Dave,I don't do hollow grinds,but if I was making a sanding form for it,I would cut a piece wood and glue a strip of rubber or leather to it. Make the combination the same diameter as your wheel and you should be good to go.Dave
Reply With Quote
  #3  
Old 12-23-2001, 09:53 PM
Bob Warner
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


If you have a grinder and can do hollow grinds now, why not use the grinder as your form? Sometimes I will put a new belt on my grinder and run it around a few times to get it centered. Then turn it off and slide my blade in and out froom the side of the wheel. Works great and you don't need to make anything special.

If you do want to make something else, why not just glue several pieces of particle board together and cut it to the diameter you need? You could cut that in half and tape sandpaper to it, set it on your bench and sand away.

Geno has a thick piece of rubber (He calls it the finger) that he wraps sandpaper around and uses that. It really works quite well.

How do I know? Because Geno gave me the finger a long time ago.
Reply With Quote
  #4  
Old 12-23-2001, 10:19 PM
george tichbourne
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


Up here in the frosty frozen north we use hockey pucks that have been reprofiled to fit the curve of the grind. They work great but you gotta use the rubber kind.
Reply With Quote
  #5  
Old 12-23-2001, 10:31 PM
Bob Warner
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


Hocky pucks is a good idea. I wonder if they are available in Texas. Not much ice here in the winter.
Reply With Quote
  #6  
Old 12-23-2001, 10:51 PM
MIKE KOLLER
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


If you are looking to get a hand finish,or just to help clean up any little flaws use the above mentioned ideas,but remember to put a small radius on the edge of whatever you use.This will help eliminate any chance of scratches in the form of swirls that will ruin a hand finished blade.

Also whatever you make can stand to be a bit oversized(tiny bit) because the dia. is different with different grits of belts.(coarse are larger than fine,as so forth)
Reply With Quote
  #7  
Old 12-24-2001, 08:31 AM
doug timbs
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


If you can't find a hockey puck (sounds like they would work well),pick up a sanding block from an auto paint shop.Cut into blocks and grind to the required radius.Make sure you use the hard rubber kind.I've been using these for a long time and they work well.
Doug
Reply With Quote
  #8  
Old 12-24-2001, 09:04 AM
Don Cowles
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


I use some stuff that is sort of like 1 " thick micarta- it is layers of canvas, but in a rubber matrix rather than phenolic. I got it at a place I used to work, and I *think* it was designed for use as either a shock absorber or electric insulator for heavy machinery.

It bandsawed fairly easily into pieces with radii consistent with my contact wheels (I made an 8" and a 10" version), and I just wrap a 1" strip around the edge. I use it for all of my hand finishing.
Reply With Quote
  #9  
Old 12-24-2001, 10:37 AM
Cactusforge
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


For a 8 in wheel the old fashion sanding block that is sold at the hardware store the rubber kind with a slit in each end that you use to hold the sand paper to the block, the ones at my store have a 4 in radius on the back side, just slice a 1 in thick piece off and you have a sanding blocb Gib
Reply With Quote
  #10  
Old 12-24-2001, 11:40 AM
Geno
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


Rubber is what I use.
Wood, felt, macarta, plexiglass, cork, many things can be used as a backing.
Make your own and find out what works best for you.
Reply With Quote
  #11  
Old 12-25-2001, 09:12 PM
winstonknives
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


Here is something that works for me, though I hardly ever hollow grind. When ready to hand sand I toss a few craft sticks (popsicle sticks) in a bowl of water. After they have soaked for a while they become limber enough to bend. I cut my sandpaper about 3/4" x 4". Then just hold the paper on the stick with your index fingers and push down with your thumbs. The softened sticks will conform to any hollow grind no matter the radius. This also allows some movement at an angle to the previous rub.
Reply With Quote
  #12  
Old 12-26-2001, 04:11 PM
Bill Foote
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


I made one of these for 12" and 8" hollow grinds. Uses sandpaper strips. I used contact cement to bond rubber to wood.

Reply With Quote
  #13  
Old 12-26-2001, 10:14 PM
WinDancer
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


Bill I am dying to see this but I don't have access to the album ????

Can anyone else view the pics?

Thanks,
Dave
Reply With Quote
  #14  
Old 12-27-2001, 12:11 PM
Bill Foote
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


Dave, I edited the pic. You can probably come up with a more ergonomic handle. I just made these and I think I'll shorten the handle.
Bill
Reply With Quote
  #15  
Old 03-05-2002, 04:01 PM
Tangus
Guest
 
Posts: n/a
Re: Anyone have a hollow grind form for sanding the grind ar


Neccessity is the mother of invention. I take an old 5/8" piece of garden hose, split it up the side, epoxy it to a 1" dowel rod some 6" long. It makes a pretty good radi when the sheet sandpaper is rolled around it one time--I normally use a little 3m spray adhesive. Guess there are a number of ways to get to the same effect.--Dan
Reply With Quote
Reply

Tags
blade, knife, knives


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

(View-All Members who have read this thread : 7
bbeishline, BCROB, curtisk, ECK, hartswave, ostrick, rockhound
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -5. The time now is 11:13 PM.




KNIFENETWORK.COM
Copyright © 2000
? CKK Industries, Inc. ? All Rights Reserved
Powered by ...

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
The Knife Network : All Rights Reserved