This is a game changer for your bench grinder!

Adding an extension to your bench grinder makes it much easier to buff and polish larger parts. Extensions are available here: www.prymemx.co...

[@johnhall8455]

A good extension to add is a 1/2” UNF threaded shaft which will take a 13mm Jacobs chuck…useful for holding wire wheels,burrs, grinding wheels etc

[@PrymeMX]

Thanks for the idea! We'll consider that.

[@johnurbanski2220]

Thanks for the info I did not know they made shaft extenders what a great idea

[@PrymeMX]

Glad you found the video! Thanks for checking it out.

[@undergroundsubs9681]

Good to know thank u i do indeed have an ol timey bench grinder. Made in USA😊

[@PrymeMX]

Got to hang onto those old solid machines! They last many decades

[@The3rdro]

Thank you for this video. This is a great idea! I bought a buffer to prep footballs. I'm going to purchase the shaft extension, but I'm having the hardest time locating a wheel brush that would be good for leather footballs. Any suggestions? I'd need two brushes. One that's a bit more coarse to take off the initial finish off of the ball and another for polishing and buffing. I'd appreciate any suggestions and thanks in advance!

[@PrymeMX]

Glad you enjoyed the video! We don’t work with leather at all so not much help, but a leather forum such as leatherworker.net/forum/ could provide you with answers. I’d imagine that some metal polishing wheels may work for leather as well.

[@praedicatorveritatis7625]

Thanks Man. Very clear explanation. Thumbs up!

[@PrymeMX]

Glad you enjoyed!

[@alexl4634]

Hi sir.where to buy the extension as you show on RUclips. Thank you God bless you all.

[@PrymeMX]

@@alexl4634 Hello, you can purchase the extension here
www.prymemx.com/products/shaftext
Let us know if you have any questions!

[@user-yu9hj4sr3m]

Appreciate the great suggestion and extension for room as I run into this issue! If I use an older motor that has a keyway on the motor shaft Is it still possible to add an extension over ?

[@PrymeMX]

Glad you found the video! If you can remove the woodroof key from the shaft, you should have no issue putting the extension on.

[@jerryrobertsguitars]

seems very expensive for what your get. my thinking is to build something better from scratch. parts: 3foot long shafts, 5/8" or 3/4" or 1'" or whatever you can find cheapest. thread the ends, mounted on two pillow blocks, pulley in middle, v-belt connecting to old US made washing machine motor. MUCH MUCH more solid than the way you are suggesting. if you have access to good scrap/surplus/junk metal suppliers the basic machine would be an affordable, durable base for buffing/ grinding wheels. The kind of setup guitar builders for cheap to buff out nitro finish guitars. also I am thinking back to the old time shoe repair shops with one long shaft holding lots of buffers and powered by only one motor. Also for anyone who has a lathe, it might be possible to run a shaft through the head of the lathe and mount a buffing wheel on the left side.

[@setdown2]

Good stuffff by you...🖖

[@PrymeMX]

Great ideas! But that's a lot more work than what it's worth. A simple $25 extension on a bench grinder will do the same thing without the belts and pulleys.

[@finster7582]

Lovin the shaft extension ! 3 more inches? um, yes please ! what guy wouldnt ? 😃👍👍👍👍👍👍👍👍

[@PrymeMX]

Right! Can’t go wrong with a little extra length

[@finster7582]

@@PrymeMX 😆 hahaha

[@AlexKost-tq6bj]

Any recommendation for what abrasives to use if you want to preserve the zinc or nickle protective coating on fasteners? I get that if you're going to fully strip and custom zinc plate an abrasive wheel is great, but what if you just want to remove dry caked on loctite from the thread so you can prep the thread for fresh loctite or grease? I was thinking some 240grit nylon alu oxide impregnated wire wheels could work or a pure brass wire wheel? Curious what you use!

[@PrymeMX]

Our fine cleaning wheel with very light pressure will not strip zinc, that is what we use at the shop. Try it on a test bolt first, with heavy pressure you can see it eventually wears through the zinc. With just light pressure it wil brush up the finish and make it bright again. It is preferable to use a 4” or 6” wheel, the 8” has too high of a surface speed.
www.prymemx.com/products/finecleaningwheel

[@6atlantis]

Do you sell quality flanges? I have two new bench grinders both with cheap stamped steel flanges resting on a very thin shoulder. I can’t find any quality flanges/face plates online. Thanks also where did you get those spacers? Can only find nylon in the big box stores.

[@PrymeMX]

Yes, we have aluminum flanges and spacers available on our website here www.prymemx.com/collections/wheel-accessories