Shopbuilt 2x72 Belt Grinder (was Adventures...)

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Fawteen
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Re: Shopbuilt 2x72 Belt Grinder (was Adventures...)

Postby Fawteen » Mon Oct 01, 2018 7:33 pm

Just a few notes from the Bean Counter Department:

All steel for frame: From existing inventory. $0
Aluminum for bushings: From existing inventory. $0
Motor and motor controller: From yard sale freebie treadmill. $0
Enclosure for electronics: From Inactive Materials Inventory. $0
Rollers: Surplus Center. $45
25mm Shaft for axles: McMaster-Carr. $28
47x25x12mm Bearings: Amazon. $12

Total cash outlay: $85

I may have to buy a small piece of black iron plate for the base, but that's the only other expenditure I anticipate.
What do you mean I can't do that?

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Fawteen
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Re: Shopbuilt 2x72 Belt Grinder (was Adventures...)

Postby Fawteen » Tue Oct 02, 2018 11:27 am



Got to the point where I needed to mock things up to determine the motor position and make sure the belt tracked and didn't slip on the poly rollers.

Noted a few changes/additions I want to make. Designing/building an adjustable motor mounting system and that should do it.

Overall, I'm quite pleased and think it will make a great alternative for shaping metal. I've been using a 6" bench grinder. With the belt grinder I have much greater control, it's easy to get edges square and I don't have to keep dressing grooves out of the wheel.
What do you mean I can't do that?

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Fawteen
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Re: Shopbuilt 2x72 Belt Grinder (was Adventures...)

Postby Fawteen » Tue Oct 02, 2018 5:25 pm

Image

The adjustable motor mount consists of two plates. This is the bottom plate with slots milled to allow movement left and right. It will be mounted in a fixed position on the plywood via the outer holes, on standoffs to allow for the hardware in the slots. There are also spacers on the top to allow for hardware on the top plate.

Image

Top plate, with slots milled to allow movement fore and aft, plus holes for motor brackets.

Image

Top plate with motor brackets installed.

Image

Mount assembled, showing offset to right and forward.
What do you mean I can't do that?

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Fawteen
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Re: Shopbuilt 2x72 Belt Grinder (was Adventures...)

Postby Fawteen » Thu Oct 04, 2018 12:43 pm

Image

Image

I think we're done. Built a stand for it and positioned it in my shop. May stay right where it is. If it turns out to be in the way, I'll put a set of casters on it, don't have a locking set on hand.

Total cash outlay was $85 as noted previously. A set of 6 belts in varying grits cost $40.
What do you mean I can't do that?

Philmar Farms
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Re: Shopbuilt 2x72 Belt Grinder (was Adventures...)

Postby Philmar Farms » Sun Oct 07, 2018 7:45 pm

I've noticed some knife makers have wet sanding abilities. Would this design stand up to water? Phil

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Re: Shopbuilt 2x72 Belt Grinder (was Adventures...)

Postby Fawteen » Sun Oct 07, 2018 8:15 pm

Philmar Farms wrote:I've noticed some knife makers have wet sanding abilities. Would this design stand up to water? Phil


Given the right belt, I don't see why not.
What do you mean I can't do that?


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