Tommy
Administrator 
Member since January 2013
Posts: 12,993
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Post by Tommy on May 11, 2018 9:41:31 GMT -5
That's fantastic Chuck - a real work of artistry and talent.
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Post by Drummond Island Rocks on May 11, 2018 17:31:30 GMT -5
That's fantastic Chuck - a real work of artistry and talent. Thanks Tommy. There really is a whole lot of work going into this project. The whole process would have been much easier if I was not so headstrong about wanting to keep the original top. The reason the top was important to me is because my oldest son helped me build that. He was the one that got me started on this whole rock adventure. He took a class at a rock club to learn how to tumble rocks and after a few months I got more involved and told him we should build our own tumbler. He helped me build the original. I am getting anxious to start assembly of the mechanical portion. Chuck |
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on May 12, 2018 18:50:52 GMT -5
::speechless::  jeannie needs to see this thread. |
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on May 12, 2018 19:00:38 GMT -5
FWIW, i had bad luck with that calculator. My belts were too long. So now I cut a rope, run it thru the pulleys and measure that length. Perfection.
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Post by Drummond Island Rocks on May 12, 2018 19:28:08 GMT -5
FWIW, i had bad luck with that calculator. My belts were too long. So now I cut a rope, run it thru the pulleys and measure that length. Perfection. On my first build I bought belts close to what I thought they would be and basically built it around the belts when I had them in hand. Before I disassembled it I checked all three belt sizes from what I had built and it was 1/32" off on each belt. That is close enough for me. That calculator also matches the cad file. It is really just measuring the straight line between the pulley tangents (X2) then measuring half of the circumference of each pulley and adding that stuff together. I used the rope measurement trick many years ago when working on cars and it does work fine (that was before the internet, yikes). Chuck |
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Post by Drummond Island Rocks on May 12, 2018 19:34:46 GMT -5
The last couple days were spent applying 3 coats of semi-gloss urethane. Today was a quick dry fit of the mechanical items. I needed to figure out where to machine all the set screw flats on the shafts. With the bearings, shaft collars and pulleys there will be 47 set screws spread across the 6 shafts.  Chuck |
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Post by Drummond Island Rocks on May 12, 2018 20:16:35 GMT -5
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on May 12, 2018 20:18:50 GMT -5
FWIW, i had bad luck with that calculator. My belts were too long. So now I cut a rope, run it thru the pulleys and measure that length. Perfection. On my first build I bought belts close to what I thought they would be and basically built it around the belts when I had them in hand. Before I disassembled it I checked all three belt sizes from what I had built and it was 1/32" off on each belt. That is close enough for me. That calculator also matches the cad file. It is really just measuring the straight line between the pulley tangents (X2) then measuring half of the circumference of each pulley and adding that stuff together. I used the rope measurement trick many years ago when working on cars and it does work fine (that was before the internet, yikes). Chuck Mine were. 2" too long. I can't even see 1/32"!!! 😵 |
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on May 12, 2018 20:19:53 GMT -5
Pretty solid carpentry for a table top table saw. |
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Post by Drummond Island Rocks on May 12, 2018 20:26:46 GMT -5
On my first build I bought belts close to what I thought they would be and basically built it around the belts when I had them in hand. Before I disassembled it I checked all three belt sizes from what I had built and it was 1/32" off on each belt. That is close enough for me. That calculator also matches the cad file. It is really just measuring the straight line between the pulley tangents (X2) then measuring half of the circumference of each pulley and adding that stuff together. I used the rope measurement trick many years ago when working on cars and it does work fine (that was before the internet, yikes). Chuck Mine were. 2" too long. I can't even see 1/32"!!! 😵 "measuring the straight line between the pulley tangents (X2) then measuring half of the circumference of each pulley and adding that stuff together" 5 of my belts just go from 3" pulley to 3" pulley so the formula I listed above is simple and works. The motor belt is another story. That one goes from a 10" pulley to a 1.5" pulley so half the circumference will not work. I'll end up drawing that belt in cad. Measuring the circumference of the belts in cad should get pretty close and the motor mount will be adjustable anyway. Chuck |
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Post by Drummond Island Rocks on May 12, 2018 20:49:40 GMT -5
On my first build I bought belts close to what I thought they would be and basically built it around the belts when I had them in hand. Before I disassembled it I checked all three belt sizes from what I had built and it was 1/32" off on each belt. That is close enough for me. That calculator also matches the cad file. It is really just measuring the straight line between the pulley tangents (X2) then measuring half of the circumference of each pulley and adding that stuff together. I used the rope measurement trick many years ago when working on cars and it does work fine (that was before the internet, yikes). Chuck Mine were. 2" too long. I can't even see 1/32"!!! 😵 Just for fun I messed around in cad just now to get an estimate for my main drive belt. So if you go into that calculator and type in the three numbers in red (10" large pulley, 1.5" small pulley and 26" centers) and hit calculate. Now add up my dimensions in green which measure the arcs and straights. The online calculator will be 70.75" and adding my cad dimensions will be 70.76. So that at least proves out how the calculator comes up with its figures. Not trying to defend that calculator just trying to understand its formulation.  Chuck |
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Post by toiv0 on May 13, 2018 1:58:50 GMT -5
Well I am amazed, nothing I build looks like it should go in a house. I always say measure once and cut a couple boards until it right. CAD what the heck is that. Glad you are showing us your build.
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on May 13, 2018 10:26:46 GMT -5
Drummond Island RocksI'm so glad you took the time to do those. Kudos to you. I wish I had time to learn CAD.
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Post by Drummond Island Rocks on May 13, 2018 15:06:12 GMT -5
After spending a quick 7 hours in the garage today the tumbler came to life. Still have plenty of work to do but at least now I know it will work as planned.
Chuck
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Post by Jugglerguy on May 13, 2018 17:14:17 GMT -5
I think that is the best looking tumbler I’ve ever seen. I watched the video twice.
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Post by Drummond Island Rocks on May 13, 2018 17:19:46 GMT -5
I think that is the best looking tumbler I’ve ever seen. I watched the video twice. Thanks Rob. I watched it twice too, LOL. Glad to have the major work done. |
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saxplayer
fully equipped rock polisher
Member since March 2018
Posts: 1,327
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Post by saxplayer on May 13, 2018 18:40:42 GMT -5
Looking fantastic, want to build one for me? LOL!! Some of the barrels were rocking a bit, does that mean you have to adjust the distance between the rollers?
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Post by Drummond Island Rocks on May 13, 2018 18:59:29 GMT -5
Looking fantastic, want to build one for me? LOL!! Some of the barrels were rocking a bit, does that mean you have to adjust the distance between the rollers? Thanks. $1,300 plus labor and shipping. Still interested? Over half of that cost is just for the barrels. The rubber hose always does that when new. They will eventually wear themselves round. It really is not an issue though. I ran it for a few hours and the barrels did not drift. There will be rollers installed at each end of each row soon. That's next on my to do list. Chuck |
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saxplayer
fully equipped rock polisher
Member since March 2018
Posts: 1,327
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Post by saxplayer on May 13, 2018 19:01:58 GMT -5
Looking fantastic, want to build one for me? LOL!! Some of the barrels were rocking a bit, does that mean you have to adjust the distance between the rollers? Thanks. $1,300 plus labor and shipping. Still interested? Over half of that cost is just for the barrels. The rubber hose always does that when new. They will eventually wear themselves round. It really is not an issue though. I ran it for a few hours and the barrels did not drift. There will be rollers installed at each end of each row soon. That's next on my to do list. Chuck I'm ok with that lol! I have 1/2 those barrels already, just need a few more lol. I have a Kreg, maybe just share the details (I'll buy?) and I'll try my hand at making one someday. |
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Post by orrum on May 13, 2018 19:23:03 GMT -5
Been watching and love that monster!
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