more information on the grinder and the air cleaner..

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Project by hardhead posted 12-16-2011 10:25 PM 2294 views 7 times favorited 8 comments Add to Favorites Watch

#1 Ok here goes. The Grinder turns in a counter clock wise motion if your standing facing the motor side of the unit. The belt should turn towards you if your standing in front of it. It turns about 3600 RPMS. You should use at least a two horse power motor so it wont slow down as you apply pressure to the unit The swival arm will rotate so you can use it as a slack belt, flat platen and use both ten and two inch wheels.

#2 The wheels came from Texas knife supply and the ten inch wheel came from Grizzley tools. You will have to put a bearing in the ten inch wheel. I used a steel flange bearing on both sides. The top arm is spring loaded so you will constant tension on the belt and it will self adjust as move the arm around. The bar that the arm attaches to is also adjustable in and out. The vertical arm also has a tracking adjustment. Also the idler pully and the drive pulley are crowned. I built everything you see except the stand and the pullies. If you have a machine shop you could make your own. They just have to be balanced well to handle the RPMS. Ive got about 400.00 Dollars in the unit.. Its not real pretty but it beats paying 2500.00 for a Burr King. Thanks for all the interest and post. If anyone has any improvement ideas please let me know. I am no shop geniouse.

#3 Ok the shop Air Cleaner is double filtered and the Intake of the squirrel cage should be pointed to the intake side of the box. I used a Air return vent from lowes for the intake side and just a plain vent for the exhaust side. It also has a filter behind it.

#4 The timer is a sixty Min timer. You will need to run your power feed into that first. When turn on the timer it will throw the current to the power switch and then to the motor. hope this helps you some. It does a very good job in the shop. It will hold a piece of paper on the intake side with no trouble.

Thanks a lot for looking and Happy holidays.

-- HardHead.

8 comments so far

View MShort's profile


1790 posts in 3446 days

#1 posted 12-16-2011 10:40 PM

Thanks abunch for the info on the grinder and the additional photos. Looks to me like $400 well spent.

-- Mike, Missouri --- “A positive life can not happen with a negative mind.” ---

View Jorge Velez's profile

Jorge Velez

356 posts in 2615 days

#2 posted 12-16-2011 11:13 PM

Great job on the improvements in your shop, it’s value add and time saving for your projects

-- Jorge Velez, Guadalajara, Mexico.

View Bluepine38's profile


3379 posts in 3113 days

#3 posted 12-17-2011 07:03 AM

Thank you for the additional information on the grinder.

-- As ever, Gus-the 79 yr young apprentice carpenter

View B13's profile


463 posts in 2721 days

#4 posted 12-17-2011 05:32 PM

Thanks! looks great!

View ksSlim's profile


1276 posts in 2918 days

#5 posted 12-18-2011 07:28 AM

Thanks for the additional pix and parts info on the grinder. In addition to makin sawdust I also hammer a little hot iron. Be interested in some of your finished blades.

-- Sawdust and shavings are therapeutic

View hardhead's profile


59 posts in 2681 days

#6 posted 12-18-2011 05:45 PM

I will be starting to get into knife forging soon I hope. I have an anvil and am building a forge. The knife grinder was a big project for me. Thanks so much for looking.

-- HardHead.

View Bertha's profile


13529 posts in 2721 days

#7 posted 12-18-2011 05:56 PM

I’m in the process of building a simple grinder/buffing system that uses pillowblocks and a shaft. I’ve got a 1hp Delta but I’m not sure how I’ll handle the rpms. I need to do some more reading. I’m very intrigued by your project!

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View hardhead's profile


59 posts in 2681 days

#8 posted 12-19-2011 12:22 AM

You can control your speed by using step pullies. I was thinking of doing that but decided not to. I Liked the direct drive better than using a belt. I cannot control the speed but the HP is very strong and it will not bog down under pressure. I have a friend that has a Burr King and his has a 1-1/4 horse motor and he can almost stop it if he puts enough pressure on it. I would say use at least a two HP. I still have to build a tool rest for mine. Thanks for the comment.

-- HardHead.

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