Disc or belt?

I will add that the HF 12" grinder is a piece of C$@p. The 1/2" shaft is soft and bends easily, 12" paper isn't cheap, and the speed is too fast.

Go 9", and stay with 1750,........ or better - speed control. Reversible is a real plus,too.
 
Little off topic but does anyone have a preference for a horizontal vs vertical disc? If so howcome?
 
Vertical, I can see what I am doing easier. I can get the blade flat and I can get the ricasso flat to within <.001. SO when I am careful I really do not need a surface grinder.
 
Stacy and Mr Richards,
Is a 9" disc with a 1750 rpm motor ok to use without a speed control, or will it be very fast and a pain in the butt? I already have a belt grinder that's way too fast. I don't need another hard to use grinder.
 
The first disc I had was 1750 non Variable. When I first started it seemed fast to me. But as I got more used to grinding it worked out fine. Grinding free hand is not easy no matter what kind of grinder you have. It takes a lot of practice. I did a bunch of draw filing in the beginning to clean up my grinds. Now I don't normally do any. Unless I need to adjust the shoulders. With the carbide file/grind guide it all comes together easier. So ease is a relative term.
 
My first 9" disc I got was a 1725 RPM. If I didn't already have my KBAC VFD I wouldn't have added a second disc.

Plus one on the carbide faced file guide. I bought one of Uncle Al's and went back and re did the plunges on 4 rough ground blades after I got it. It's worth every penny. Bruce Bump also sells a carbide faced guide.
 
medicevans said:
Stacy and Mr Richards,
Is a 9" disc with a 1750 rpm motor ok to use without a speed control, or will it be very fast and a pain in the butt? I already have a belt grinder that's way too fast. I don't need another hard to use grinder.
Click to expand...

What type of belt do have??

BTW Please call me Chuck, Stacy is much older than I and if you need to call someone Mister please make it him. :rolleyes::D
 
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Ok. I can call you Chuck. :)

I have a 2x42 Craftsman. I'm running belts from trugrit. Norton 60 grit, gators in A65, 45, 30. I have a ceramic platen, but I really should put a hardened steel or similar on it. I think with a nicer platen and a carbide faced guide I would do a bit better. I have some leftover 5/16 O1 from my first failed knife that is just big enough to make a file guide from, I just need to get the faces milled flat and then heat treated. At least then I'll be able to fix my plunges with a file.

I have an EERF frame a coworker's husband cut out with a laser. We had to use the rest of the allotted money for medical bills, so I'm just storing it for now. I'm still hunting for a salvage motor for cheap and then wheels and I'm up and running. I've talked with Jose Navaro regarding his budget wheels, that I think will work fine for a while.

I'm really wanting to start folders, but I'm undecided about making such small blades on such a fast grinder. I do know I'd like to go to an 80 grit belt, 60 grit leave a deep scratch that's hard for me to get out without burning tips.
 
Oops, just read that last post again. Yes please call me Chuck. It was making me feel older than I need to.
 
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A ceramic platen is a great way to go. I prefere it over steel. It makes my belt run smoother. For some reason most of the bump is eliminated with the ceramic. The 2x42 is not the best for knifemaking. That is why most of us will try to suggest something else. The disc, for me, is great. Just not quite as versatile as a 2x72.
 
My dad was Mister...I'm Stacy.

I use a 1750RPM, 9" horizontal disc most of the time. I have a VS vertical, but rarely set it up. I will replace the horizontal motor with VS in the new shop. The VS is a plus, but reversible is more important.
 
Is Bruce Bump's carbide file guide available for purchase somewhere? I tried an internet search and couldn't locate one.

Thanks,

Mike L.

LoGiudice Custom Knives
 
Thanks Brian! . . .that was from January of last year. I'll try that route though.

Mike L.
 
It's an active thread with 10+ pages. They do em in runs and I think they're between runs.
I have one of Uncle Al's, but figure since Bruce adopted me I better be recommending his guides too. In fact my friend Greg is buying one too.
 
Bruce's file guides are great also. But like Brian said they do them in runs so contact him if you want to get one. I think if they get enough interest they will make up a batch.
 
A C Richards said:
Bruce's file guides are great also. But like Brian said they do them in runs so contact him if you want to get one. I think if they get enough interest they will make up a batch.
Click to expand...


I heard my name mentioned over here. The file guides are a side line for me and I cant get many done because of the long long list of knife orders already in the books. I cant promise when they get finished so we havent advertised on Blade Forums at all. I cant afford to hire somebody and my apprentice ran off so I have to make them myself. If I get too many orders I will have to start turning down the orders as my knife customers deserve the lions share of my attention.

I use a foot control on my disc grinder. Its an elcheapo Ryobi 6" x 36" that I finally just took off the 36" section because I never used it. The foot control allows me to put the part against the blade and simply tap the pedal to spin the disc just a few revolutions for ultra fine removal. You'd be surprised how accurate this is. I'd like to have about 3 of these because the sand paper grits could be different on each one. At only about $100 each thats not a bad investment.
The down side is for long blades with the smaller disc.
 
rnielsen said:
If your looking for a disc grinder, I offer one with interchangable 9" discs in flat and 1 degree bevel. It has proven to be a very handy tool. You can check it out @ www.nielsendesigndiscgrinder.com
using this system allows you to run either a flat disc or 1 degree bevel disc on the same motor. the discs interchange in seconds.
Some say a disc grinder is the only way to get a true flat grind on a blade.
take care
Rod Nielsen
Click to expand...

:thumbup: I mounted one of Rod's custom disc on my 9 inch horizontal vari-speed machine. Great design, well executed along with being a real time saver in the shop.
Fred
 
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