REAL MAN TRUCKWORKS & SURVIVAL

TOOLS, CONSTRUCTION, ALTERNATIVE ENERGY => Hand Tools, Power Tools, Welders, etc => Topic started by: KensAuto on December 11, 2018, 05:16:04 PM

Title: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 11, 2018, 05:16:04 PM: So the grinder showed up yesterday, and I came to realize that I didn't have a place to put it.
I had this heavy rack that I cut in half to use as a bathroom sink "cabinet ", and the other half just taking up space.
First, the grinder itself:

(https://uploads.tapatalk-cdn.com/20181212/44adbe5329ea1700094298ceec230105.jpg)(https://uploads.tapatalk-cdn.com/20181212/176a9d87b22561d31253022671ad06a8.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: akraven on December 11, 2018, 05:53:01 PM: I had one of these quite awhile ago and it was well built. I would suggest you are actually getting it for making knives to consider one of the other style 2"x72" grinders. They can accept differient attachments that are applicable to knife making.
Similar to this design http://www.northridgetool.com/packages/#standard_package They area pretty easily made if you check on youtube for construction ideas
https://www.youtube.com/results?search_query=homemade+knife+grinder
I also recommend sticking with 272 belts as they available in the most types.
Title: Re: Grizzly Knife Grinder #G1015
Post by: stlaser on December 11, 2018, 07:31:22 PM: Big difference in price point for a hobbiest
Title: Re: Grizzly Knife Grinder #G1015
Post by: akraven on December 11, 2018, 07:58:03 PM: That one I listed was just an example, you can shop around and get one cheaper or make one.
Title: Re: Grizzly Knife Grinder #G1015
Post by: stlaser on December 11, 2018, 08:07:17 PM: You can find a used burr king for around a grand, we used those at my shop. I’ve been watching locally lately and everyone is pretty proud of them at the moment.
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 11, 2018, 09:14:07 PM: Jeez I ain't even posted anything yet!
2 reasons I went with this one is first, can't beat it for the price. There is an aftermarket attachment that will turn it into a 4 pulley setup for 170 bucks.
Second, primary use will be for metal fab, and the compact size makes it easier to fit in my tiny shop. (I guess that makes 3 reasons).
It also runs the common 2x72 belts.
Title: Re: Grizzly Knife Grinder #G1015
Post by: Flyin6 on December 11, 2018, 09:17:43 PM: Quote from: KensAuto on December 11, 2018, 09:14:07 PM
Jeez I ain't even posted anything yet!
2 reasons I went with this one is first, can't beat it for the price. There is an aftermarket attachment that will turn it into a 4 pulley setup for 170 bucks.
Second, primary use will be for metal fab, and the compact size makes it easier to fit in my tiny shop. (I guess that makes 3 reasons).
It also runs the common 2x72 belts.
You have no room to say anything.

Boneheads add two pages to my threads before I have done anything!

They are just windin' up on yours!
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 11, 2018, 09:25:52 PM: I added a steel plate and reinforced underneath. Drilled some holes, added levelers on the legs(1/2" bolts, nuts, and plates), then painted the stand.(https://uploads.tapatalk-cdn.com/20181212/03fd95fb1f980fed267b5a18ed4289cc.jpg)(https://uploads.tapatalk-cdn.com/20181212/391a9c2dd4301d460b84c19163663f8d.jpg)(https://uploads.tapatalk-cdn.com/20181212/7a1c2108cccd304c27e9b99ef50cca80.jpg)(https://uploads.tapatalk-cdn.com/20181212/4c81073dc692954dd86cc6d1bc8aacc7.jpg)(https://uploads.tapatalk-cdn.com/20181212/dc018438f050339175856edf1f331788.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 11, 2018, 09:33:23 PM: Then started putting the grinder together.
It's a pretty decent setup. Basically it's a 1hp buffing motor that they add a belt kit to. The engineering isn't great , but it is pretty beefy.
It's also a Taiwanese piece, which is usually a step up from China.
...the first issue I found was that the motor pedestal casting wasn't flat, so I had to grind on it...about 30 thou. (https://uploads.tapatalk-cdn.com/20181212/ddb0a5adb2d50d7e6ccd95d8ec788082.jpg)(https://uploads.tapatalk-cdn.com/20181212/37fdb190dd5b083f733ca092d4a19c49.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 11, 2018, 09:39:58 PM: Bolted it down and added the rest of the parts. The instructions were clear, along with pictures for those that live near Denver. The only Issue I found was that they wanted a 3/4" long bolt and washer to be used to hold on the work table bracket, which is 5/8" thick.
The support bracket in the 3rd pic, has little set screws that are used to square itself to the motor....kinda hokey but will work. (https://uploads.tapatalk-cdn.com/20181212/34652e79119bf5ca4bd4435f284e4ea3.jpg)(https://uploads.tapatalk-cdn.com/20181212/e4b9141a8b580021f915d791f8bd1abf.jpg)(https://uploads.tapatalk-cdn.com/20181212/6b1d5110a393b3bf075ced5572f3d759.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 11, 2018, 09:45:16 PM: ..got the belt installed. I also have a buffing wheel to install on the opposite side.
I'll try it out tomorrow and report, and also mention the issue with belt tracking that some others, online, also reported. (https://uploads.tapatalk-cdn.com/20181212/3eddc663e2c391442554e0c96a37f1ef.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: stlaser on December 11, 2018, 10:36:45 PM: I heard that..... :tongue:
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 11, 2018, 11:16:56 PM: Here's the conversion setup. Only issue I see is that it uses the original graphite coated platin.(https://uploads.tapatalk-cdn.com/20181212/be6b070fc91a6bdedcbfb0605fc258b2.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 12, 2018, 03:56:50 PM: First pic shows the carbon layer on the platin (the plate you push against when grinding). It is pretty soft and wears away fairly quickly. I read where some guys glue a piece of glass on there to fix the issue.
Like others, I've noticed an issue with the belt staying centered. The last pic shows where I had to move the top pulley 1/2" out, then tightened all the pivot lock nuts just enough to still allow movement (the pulley bracket is spring loaded and keeps tension on the belt).
Also moved the stop collar, in the 4th pic, that came preset, to allowed me to raise the tube to add extra tension on the belt.
It's pretty decent now but you can't really use the edge of the belt, for detail work, without the belt moving off center again. (https://uploads.tapatalk-cdn.com/20181212/cdcbea4c7fb01a5422b04768932c3e5a.jpg)(https://uploads.tapatalk-cdn.com/20181212/794e16bbca778ea3b4e7994cbb78df5f.jpg)(https://uploads.tapatalk-cdn.com/20181212/71c7d20140e481cd760b967eb129e97d.jpg)(https://uploads.tapatalk-cdn.com/20181212/9d1d4aead2c03c721d37bc6823d96018.jpg)(https://uploads.tapatalk-cdn.com/20181212/93cc0cb14765dc295ece1e915c25e99f.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 12, 2018, 04:00:45 PM: It made fairly quick work of the railroad spike once I ditched the 100 grit belt that came in the box, and switched to a decent 60 grit version. (https://uploads.tapatalk-cdn.com/20181212/fa1b89149780b01e325d32a25d86acee.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 12, 2018, 04:04:46 PM: It made a mess on the floor so I modified a bolt bin to catch the fillings.
..and another for water.
Also added a light because of my age.(https://uploads.tapatalk-cdn.com/20181212/1168f140468003c99a7e282f81e78d0a.jpg)(https://uploads.tapatalk-cdn.com/20181212/76fccd8975d2ded5aedb9d38c3855c86.jpg)(https://uploads.tapatalk-cdn.com/20181212/01a58aacf861837e0afdb0d293faeeb6.jpg)(https://uploads.tapatalk-cdn.com/20181212/b5f217716381a62d15a10de4034b913e.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 12, 2018, 04:17:31 PM: ..and before any of you pro knife builders give me too much crap, try to realize that I have absolutely zero experience in this area.
Once you take that into consideration, give me all the crap you can dish out (unless you're name is Dave, or Shawn, or Mike, or Don, or Nate, or.......) :)

Here's the piece of 70's chebby leaf spring we hammered out a couple weekends ago.
It started out about 1" wide, 5/8 thick and 3" long. (https://uploads.tapatalk-cdn.com/20181212/38f0dfa61c21229780383b712a260bb4.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 12, 2018, 04:27:38 PM: First pic is a design I really like, for cleaning deer and similar chores. I cut the pattern with a cutoff wheel.
The second pic is after trying to remove the scale freehand....then...
I found a finger-smashing magnet and stuck it on a piece of angle to hold the blade, since I don't trust my accuracy. I'll make some jigs if I start to take this seriously.
(https://uploads.tapatalk-cdn.com/20181212/b5f987c4df157341464882febbc425ec.jpg)(https://uploads.tapatalk-cdn.com/20181212/15508d442f6d68aa20917e31803ec6ad.jpg)(https://uploads.tapatalk-cdn.com/20181212/8c009e45004d1a256ba63e8127005ccc.jpg)(https://uploads.tapatalk-cdn.com/20181212/dd0c8d28c3ffb880f756a4f22c99d242.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: TexasRedNeck on December 12, 2018, 04:31:11 PM: :like
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 12, 2018, 04:31:30 PM: ...and found out how harder it is to grind 5160 compared to a railroad spike. I dulled the 60 grit belt pretty quickly, partially because the magnet put to much pressure on the platin. Oh well, it works for now.
Time to quench. (https://uploads.tapatalk-cdn.com/20181212/e70ad4de47df2730660b5dd070e88ce8.jpg)
Title: Re: Grizzly Knife Grinder #G1015
Post by: akraven on December 12, 2018, 08:49:14 PM: Quote from: KensAuto on December 12, 2018, 04:31:30 PM
...and found out how harder it is to grind 5160 compared to a railroad spike. I dulled the 60 grit belt pretty quickly, partially because the magnet put to much pressure on the platin.

Ken what type belts are you using? I found that the standard belts you would find in a hardware store don't last long when working with knife steels. Most of them are aluminum oxide(AO). Try some Norton Blaze belts or Ceramic belts. More expensive but will last much longer.
Title: Re: Grizzly Knife Grinder #G1015
Post by: HARV KOSO on December 12, 2018, 09:17:03 PM: I run Pheonix Abrassives belts 50/120 grit ceramics
And 220/400/800 aluminum oxide.
Red scotchbrite for blending.
And a 2x72 leather strop with green compound rubbed in it.
Title: Re: Grizzly Knife Grinder #G1015
Post by: KensAuto on December 12, 2018, 11:40:06 PM: Thanks guys. I just got them from grizzly so I would have something to start with, or should I say practice with.
I will order some good ones after these are done, based on your recommendations.
Title: Grizzly Knife Grinder #G1015
Post by: HARV KOSO on December 14, 2018, 07:30:11 AM: I only have 3 years doing the deed, but I’m well versed in the gear I run. I’ll help where I can

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