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  #21  
Old 03-03-2014, 07:38 PM
Dr_Stan Dr_Stan is offline
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Quote:
Originally Posted by Shade Tree Welder View Post
make your own.
Good idea. Here's a site where you can find lots of examples: http://www.homemadetools.net/
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  #22  
Old 03-04-2014, 12:05 PM
welddoc welddoc is offline
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Default belt grinder options

Thanks again for the further input. Man, the Jet grinder combo looks nice. I am not a machinist and have never built anything with an electric motor/belts/pulleys but the multiple "projects" on the diy site certainly look interesting. I'm not sure where I get motors/pulleys/belts here in New Hampshire but I'm sure they are available...
This forum continues to impress me with your willingness to help and not ridicule. As a "newbie" and a hobbyist I am very grateful to all of you for responding.

Bruce
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  #23  
Old 03-04-2014, 02:47 PM
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Roundrocktom Roundrocktom is offline
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Bruce -- just start building one!

Parts...
https://www.beaumontmetalworks.com/shop/
In addition to complete works of art, they also sell wheels. In many cases just explain what you need, and a member can help you out.

A fellow airplane builder put together a 2" x 74" belt grinder from a decent
scrap pile. Good inspiration:
http://www.youtube.com/watch?v=5ONrJB5sDQk

We all started someplace, just dive in. Safety first, then go for it.

Tom

PS -- this is what I'm thinking for my next grinder.
Tool Steel. Heat Treat Oven. Personal Grinder 6" x 12" (I keep finding junk at auctions).
http://www.tormach.com/store/index.p...Package_Deluxe
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  #24  
Old 03-04-2014, 02:54 PM
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Roundrocktom Roundrocktom is offline
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One other tip... everything warps. The minute you heat steel, and it cools... it is pulled out of alignment. Just part of life, like taxes and death.

If you add a "bolt up plates" (4" x 4" plates) to a 2" x 4" steel tubing arm. You have a method of moving end end of a 2' long arm. Just a simple 0.010" shim on one side works.

There is something called flame straightening (heat a spot, let if cool and it will pull metal in). Pretty cool to play with, but if I need everything in perfect alignment a shim is quick.

Tom
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  #25  
Old 03-04-2014, 04:49 PM
welddoc welddoc is offline
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Default DIY belt grinder

Tom,
I am cautiously encouraged to try. How do I measure feet per minute speed of my grinding belt? I assume a 1hp motor single speed 115 v would be sufficient.
Bruce
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  #26  
Old 03-04-2014, 05:00 PM
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Shade Tree Welder Shade Tree Welder is offline
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Originally Posted by welddoc View Post
Tom,
I am cautiously encouraged to try. How do I measure feet per minute speed of my grinding belt? I assume a 1hp motor single speed 115 v would be sufficient.
Bruce
(D x 3.14)
------------ x rpm = surface feet per minute
......12

D = diameter of the driven pulley
rpm = the rpm of the motor.
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  #27  
Old 03-23-2014, 06:12 PM
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OZWELDER OZWELDER is offline
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Hi Guys,
In this thread there has been mention of both the Jancy belt grinder and the Multi tool belt grinder .Both originally are Australian designed and made products from the same inventor.

I have owned the Multi tool for some 20 years and swear by it. I use it far more than any other electrical tool in my workshop. I switch it on at least once a day.

The unit can grind,sand, polish, sharpen and shape metals until the cows come home.Flap discs on an angle grinder lasts minutes but belts last weeks.

A disc is fitted to the major wheel plus it takes attachment table to bevel materials and a hollow grind fixture for chisels and screw drivers.

Recently there had been a manufacturing (some components were China made- see what happens ? ) problem with some of the disc wheel concentricities, but I understand that has now been fixed. I would love to buy a Radius Master but they are over $2000 Au and I will have wait for a lottery win.

A mobile stand and a wire buff on the other end on the grinder body is about all the improvement one can do to this marvelous tool.

Oz
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  #28  
Old 03-23-2014, 06:37 PM
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platypus20 platypus20 is offline
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Yes, I own the fore mentioned Jancy RadiusMaster, at this point I wouldn't be without a belt grinder. I use it constantly, everything from light touch work, to honest metal removal (at a scary rate). Mine is rated at 3600 fpm, some units available can go as high as 8000 fpm.

Between the Jancy and flap wheels on Metabo grinders, I haven't used a bench grinder is about 5-6 years, no need to. As most stuff the shop is cut out with a plasma cutter, there is very little clean up.
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  #29  
Old 04-06-2014, 05:58 PM
welddoc welddoc is offline
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Default I finished my belt grinder!!

I finished my belt grinder today but I need a 2 inch by 36 inch Zirc belt to try and use the machine. My wife took a video with her iphone but I don't know if I can post a video (nor do I have any idea how to). This is my first ever project in my newly inherited newbie metal shop and I am very proud. I hope the damn thing will work but I would like to show it to the forum for some constructive criticism...
Bruce
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  #30  
Old 04-06-2014, 10:20 PM
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cutter cutter is offline
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Originally Posted by welddoc View Post
My wife took a video with her iphone but I don't know if I can post a video (nor do I have any idea how to).

Bruce
We want to see it, too and we'll get that video up one way or the other in due course.
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