PTO powered stump grinder build

[jwmorris]

I have been gathering up stuff for awhile and finally got started. The shield is the steam dome off a boiler, my Father cut up in the ‘80’s, (think I’m going to build a firepit with the rest of it) some drop 1/2” plate from a roller project, the clutched drive shaft came from vevor $100 and 34 carbide tipped teeth.

So far I have a dozen of the brackets cut out making the best use out of the plate I could, using my pantograph machine with oxy/act torch.

Tack welded them together for hole drilling, as a group.

 

[ruffdog]

Keep the pictures coming!

 

[Rustyiron]

following.
Not to distract from your stump grinder..... but that old riveted tank will make an very nice fire pit. Preserve as many of those rivets as you can.

 

[jwmorris]

I cut the hub for the grinding wheel, it’s amazing what one can do with a regular hand torch, if it can be guided steady.

1 1/2” plate.

I turned it “perfect” but it’s nice starting with something less jagged than my hands give me. Went ahead and drilled it out close to “finish” size while I had it in there.

Then I bored out the main shaft for the 1-3/8 splined shaft and pressed it in, so it’s ready to weld.

I also mocked up the main front/back plates and layed it out in the right scale for the pantograph (-on OD’S and + on ID’S) on my soon to be plywood template.

 

[jwmorris]

Every time I get rolling on a project something get in my way… I get a call from a fellow that was trying to sell me a generator but it wasn’t in running condition, I told him I couldn’t offer anything for something I was unsure if worked, a couple months later he tells me to just come get it and “for free” is a price I can rarely pass up. I primed it with no fuel a couple times then fired it of and ran it on propane for a few minutes, sounds good and back to work, for now.

I did get the main plates cut for the front and back.

Starting to lay out the main grinding wheel, made from 3/4” plate. The square washers “clock” the carbide cutting teeth and will be welded to the 3/4” plate, the tabs cut from the wheel will be welded into the slots to add cutters that are not perpendicular to the plate.

 

[5030]

You'd be much better off in the long run with 'Greenteeth' wear sharp carbide teeth. One, made here, Green manufacturing is in Michigan and two, replacements are readily available plus the Greenteeth are indexable. What I use on my factory built stump grinder.

 

[jwmorris]

I did look at them, they seem more at home on a “swinging” design, going back and forth across the top of a stump.

The one I am building is intended to be lowered on the back side of the stump and pulled through.

 

[jwmorris]

I drilled the front and back plates for the pillow blocks, starting with a center punch to locate the holes.

Then center drill at the punch location.

Next drill the pilot hole.

Then finish drill.

Reset pillow block with shank of 5/8 bolt and repeat, like the first photo, showing the last hole, being center punched.

Ready for the cap plate now.

Started on drilling the other brackets too.

 

[5030]

Your shop is as cluttered as mine is...lol Had to do some housekeeping last night. I couldn't get my welders in the machine room as in no room. Working on a very screwed up H bracket for a Case extenda hoe. I had to cut the ears off and reweld them because it was so twisted. I used MIG spray arc with my Hobart 210 MIG running balls to the wall. It's a really fine MIG too. Had it for at least 10 years and I've run the bags off of it. I'm, gonna modify it to 'fan on demand', going to do my plasma cutter and my TIG machine as well.

I 'fixed it but it won't last as the owner has tweaked the center plate pretty bad. I suspect I'll be fabbing a new one this winter. He really buggered up the OEM one and I bet the part is NLA as well.

Curious as to what kind of Mag drill you have and why you didn't just use Rotabroaches to make your holes?

 

[jwmorris]

The mag drill is a “vintage” Milwaukee. Personal projects come from, opportunity and free resources or else I would buy it.

It would be Interesting to know what alloy the, Boiler plate is. It was certainly tought getting into place.