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Old 05-01-2018, 03:33 PM
lellasone's Avatar
lellasone lellasone is offline
Join Date: Mar 2018
Location: Pasadena California.
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Grinder tracking and design review.

Hey All,

A few weeks back I posed a question about grinder features. Based on that thread I've sketched up a preliminary design. It is mostly composed of .5" aluminum plate, and currently looks like it will cost around 1500 all told. I would greatly appreciate any feedback (especially harsh feedback) that comes to mind.

I am also curious about folks preferred means of tracking adjustment. It seems like a lot of grinders use a tilting system, but a few (Reeder) have more degrees of freedom.

Design Pictures should be attached, and I can upload the CADs if anyone is interested.
All the best,
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File Type: jpg Version 1.1.JPG (189.9 KB, 19 views)
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Old 05-04-2018, 06:27 AM
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Ed Caffrey Ed Caffrey is offline
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Hi Jake,

Personally, I dislike aluminum for building a grinder. While it might seem like a good idea, aluminum for a grinder has drawbacks versus steel. Aluminum grinders are much lighter than steel, and tend to be not nearly as smooth operating as steel. Weight of any machine equals stability..... vibration tends to be an issue with aluminum grinders. There is also the aspect of wear.....particularly on tooling arms..... I've tried aluminum tooling arms a number of times, but always go back to steel.....due to wear.

I assume the image of the small contact wheel represents the tracking/idler wheel? If so, I think that should be redesigned.... you'll want a larger diameter idler, preferably crowned. I would also suggest eliminating any screw/bolt heads extending out.... Anything that might get in the way of the belt's movement.

One aspect that many folks don't think about or realize with a grinder..... it needs to be mounted at the correct height for YOU/the user. To that end I'm not a fan of a single grinder that can be used vertical and horizontal...... if mounted so the height is correct for one position, it's almost never correct for the other.

"Nobody cares what you know.....until they know you care."
See me at table 2Q at the Blade Show!
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back, belt, building, ca, degrees, design, grinder, image, question, screw, small, steel

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