First grind with steel!

M

M.Rodriguez

Joined
Nov 11, 2008
Messages
18
Howdy guys! I did my first grinding on my grizzly 2x72 and some steel i got before the contest. This is just me getting the hang of the grinder. Its kind of wierd trying to hold the back of the blade with ur fore finger as you lower it onto the 10inch contact wheel. The belt is moving so fast it tugs on the blade a bit. I used the work rest and a push stick to try it the Johnny stout way. I made quite a few mistakes and learned alot also. I did the initial hollow grind with 36 grit too 120 then too 600. I was wondering if 120grit is good enough for heat treatment? I doubt i will even heat treat the blade though.
 

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120 grit is good. I usually hand sand out to 220 before HT unless I'm leaving a lot of meat on the edge, then I won't take it past 60 grit. Hollow grinding on the Grizz is near impossible due to the wheel location next to the motor housing but if it works for you, more power to you!
 
M.Rodriguez said:
I doubt i will even heat treat the blade though.
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Why not? If you don't want to make a finished knife out of it, you could always HT it and then break it. You will learn a lot from it. You'll be able to find out if it's too hard, too tempered, not hardened at all, etc. There's no need to be super scientific about your testing, since you probably don't have a high tech HT set up. However, it will give you important insight into what you're doing - AND its kind of fun to break stuff.

However, it looks like a good start and you might feel good if you at least gave it a HT and then a cord wrapped handle. You could always use it around the shop, or toss it in your glove box. Using it for shop duties will give you some insight into how the HT process went - edge holding capabilities and such.

I can see you have a little step in your plunge. I'm guessing you have a fat platen that isn't flush with the edges of the belt. You might want to consider a ceramic or glass platen, which will make your knife making much easier.

Good luck.
Brook
 
Im waiting for Ellis Custom Knifeworks ceramic platen to come back in stock. Ordered the 2x9" 2 weeks ago or so. The grizzly tool rest is a pain to work with in my opinion. On a different note, i noticed that the hollow ground curve i did took up most of the face of the blade. I need to work on that grinding some more.
 
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I think I would heat treat and finish it.It certainly looks good enough to be worthy of finishing.
 
10" contact wheels on the grizzly allows you to not have to fight the motor. It comes with a 8" wheel. Looks real good. I went through the same learning curve with mine.
 
I had the 10" on mine for awhile but it made it run too fast and decided I preferred flat grinding. And yes, you're right, it brought the face out more to avoid fighting with the motor housing. :)
 
You must of editted your post, because I could of sworn you said you had a 2x42 grinder. Please forgive me if I gave you advice you already knew.

Brook
 
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