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The Newbies Arena Are you new to knife making? Here is all the help you will need.

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  #1  
Old 06-23-2015, 05:57 PM
BPITT BPITT is offline
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Grinding tip??

Hi Guys,
Do any of you use a work rest/table while flat grinding? Is it helpful or not?
Any advise would be great.
Thank you
Pitt
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  #2  
Old 06-23-2015, 06:41 PM
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Ray Rogers Ray Rogers is offline
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Some do. They may find it helpful but it also adds at least some small amount of limitation to your ability to move. Free hand grinding takes a little practice but if you can do it then you can grind just about any style or shape that you can imagine. Flat grinding free hand is especially easy so I don't see any reason at all to use a tool rest for that ...


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  #3  
Old 06-23-2015, 06:48 PM
BPITT BPITT is offline
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Thank you so much Ray.
I know some guys attache their blade to a block of aluminum and tilt the platen, im going to try this out, but also free hand. I have a grizzly belt grinder.
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  #4  
Old 06-23-2015, 08:05 PM
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For me, attaching anything to the blade just makes it clumsy but give it a try, it might work better for you than it would for me. The most important thing is to get things arranged so that you are comfortable and balanced while you grind. Tuck your elbows in and sway your body to move the blade. That gives you a much steadier hand against the powerful grizzly grinder than trying to hold the blade with your arms extended....


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  #5  
Old 06-24-2015, 12:14 AM
BPITT BPITT is offline
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Hi Ray,
I saw a guy today on youtube doing a convex grind, he had a felt coth or pad on the platen, do you now anything about those?Like where to buy those or do knife makers make them themselves?
Thank you for all your help.=)
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  #6  
Old 06-24-2015, 12:28 AM
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Hi Ray,
I saw a guy today on youtube doing a convex grind, he had a felt coth or pad on the platen, do you now anything about those?Like where to buy those or do knife makers make them themselves?
Thank you for all your help.=)
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  #7  
Old 06-24-2015, 08:00 AM
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I would imagine he made it himself. I covered one of my platens with heavy leather to achieve the same effect and it probably wears better ...


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  #8  
Old 06-24-2015, 04:14 PM
BPITT BPITT is offline
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Hi Ray.
Thank you so much for all your info/help.
Could i ask another question? Im going to be grinding 5160 steel,
What grit belts do i use and what brand?
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  #9  
Old 06-24-2015, 04:31 PM
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Hunter10139 Hunter10139 is offline
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Hey man regarding belts,

For rough grinding the steel I highly recommend the ceramic belts sold by tru-grit. I've also used the 240 and 400 grit gator belts tru-grit sells to polish my hollow grinds to a satin finish.


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  #10  
Old 06-24-2015, 04:37 PM
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What grits on the ceramic belts,35?
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  #11  
Old 06-24-2015, 06:05 PM
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I'm using 120 right now.


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  #12  
Old 06-24-2015, 06:38 PM
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Ultimately, you'll need to try a lot of different belts to find what works for you. I use 60 grit ceramic VSM belts from Tru-Grit, followed by 120 and 220 Norton , and finish with 400 Hermes. There are many, many other belts of every conceivable style and purpose but over the years I've settled on these. These will definitely do the job for you but I encourage you to try any others that catch your fancy as time and money allow ...


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  #13  
Old 06-25-2015, 10:34 PM
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Hi Ray,
Can you tell me what degrees there are for flat grinding?
What do i start at out and what degrees do i move through?
Thank you,
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  #14  
Old 06-26-2015, 12:06 AM
damon damon is offline
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between 6.3 and 8.75 degrees from each side.

*sorry being a bit of a smart ass)

average size EDC from 1/8 or 3/16 thick stock.. blade 3/4-1 1/2" tall.... id just mark the center line on the cutting edge and grind it down till its flat from the spine to the edge, but leaving the edge .010"-.020"
thick.

unless youre trying to program a CNC to grind them for you, there isn't much need to calculate out what degree the grind is.

just my thought.
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  #15  
Old 06-26-2015, 08:28 AM
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I completely agree with what Damon said (including the part about the smart ass). Sure, once the grind is finished there will be some specific angle that has been created due to the specific size of the blade in question but no one cares what that angle might be. And, if you tried to grind at that angle from the start you would likely create a lot of problems for yourself. Like anything else, there are more than one way to skin that cat and some ways are easier than others. You can use the Search function and maybe find one of the several times where I wrote lengthy descriptions of the process I use. Or, I moved the thread about a video I made showing the process for flat grinding in real time to the top of this forum so you can get a copy and watch the whole thing start to finish if that suits you better ...


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5160, art, belt, belts, blade, block, brand, convex grind, easy, flat, grind, grinder, grinding, hand, help., knife, leather, made, makers, man, polish, satin finish, small, steel


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