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Post by Drummond Island Rocks on Oct 16, 2013 10:35:26 GMT -5
I never gave any thought to selling plans for my workbench tumbler but after seeing a listing on ebay this week for someone selling a set of "drawings" that do not even include stocklist or dimensions I am now thinking I might make a detailed PDF of a smaller table top version of mine. Here's what the design is looking like. I would put guards over the pulleys if I built it but most that I have seen don't use them so I left them off for now as it does complicate it a bit. here's the listing that got me thinking and they did sell (2) this week. www.ebay.com/itm/300986081666?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649Here's my version with (4) lortone 3 pound barrels the base board is 3/4" plywood and the risers and bearing mount boards are 2x4 and 2x10 to keep it very simple. And here's the same tumbler with (2) 12 pound and (1) 6 pounder on it for a total of 30 pounds. Let me know what you think of the idea? Chuck
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Post by wireholic on Oct 16, 2013 11:30:51 GMT -5
Yours looks much more stable than theirs! I would be concerned with those wooden tabs he had on the sides to attach the rods couldn't support the weights he was talking about. 100 lbs of rock would split that wood real quick! Yours however looks like it distributes the stress evenly on the boards and would last a long time
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Mark K
Cave Dweller
Member since April 2012
Posts: 2,598
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Post by Mark K on Oct 16, 2013 11:31:04 GMT -5
All of that guys stuff is garbage. It is all made of low quality wood and it tends to want to fall apart. It is way over priced for what you get.
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Post by Hard Rock Cafe on Oct 16, 2013 12:24:12 GMT -5
Go for it. I recently gave instructions for building a tumbler to our club for the newsletter. Maybe I should write them up properly and sell the plans on ebay. My focus was more on building a large (100 lb.) barrel as opposed to the tumbler itself.
On the other hand, I've had about enough of ebay, so I'll probably never do it.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Oct 16, 2013 14:22:56 GMT -5
There are other places besides Ebay and I think you have a good idea. People sell plans for all kinds of things and if someone comes up with a better idea it should sell ok. If you offered two or three sizes you might sell a lot more. There are a lot more people out there that can build things but not plan things.
The only thing that I wonder about on your plan is the 2 X 10. They are a lot more difficult to come by than say ? 2 - 2X4s or one or two sheets of 3/4 inch plywood. Not many people have a 2 X 10 laying around. Just my two cents. Jim
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Post by Jugglerguy on Oct 16, 2013 16:58:23 GMT -5
I think you should go for it. You already have most of the work done by the looks of it. As a buyer, it might be reassuring to see a finished product, like the eBay listing you showed. That wasn't reassuring, but a nicely built and finished model would be. You could build one and sell it too. By showing a picture of the completed project, you wouldn't have to post your drawings, which are almost good enough to use without buying anything else. If you built one, you could even make a video or photo based tutorial to go along with it. I'm not sure how you would deliver a video, but step by step photos could be made into a PDF and emailed easily.
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Post by Drummond Island Rocks on Oct 16, 2013 18:19:24 GMT -5
Rob - I was thinking of building one just because I like to design and build stuff but there's about $120 just in the mechanical parts (shafts,bearings,pulleys and belts) and that cost does not cover the wood,motor or barrels. I think it would be a hard sell on craigslist at what I would have to ask. The customer that would need this would be the kind looking at lortone Model C200-12. If someone really just wants (4) 3 pound barrels running then its probably cheaper to just get a couple lortone 33B's. I think to buy a similar quality store bought tumbler with heavy duty motor,shafts and belts you would compare this to the C200-12 shown here at $540 www.lortone.com/commercial_tumblers.htmlChuck
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Oct 16, 2013 23:10:10 GMT -5
Good, sound, simple plan, why not go for it. A couple things I see as food for thought: Instead of using a 2x10 for the top plate, since the base is 3/4 ply anyhow, why not laminate two pieces together to make the top plate. Saves on mtl. purchases. I do like the idea of a 1 1/2 thick plate. As I see it, the shafts stick out quite a ways on the drawing, my thoughts are to keep them as short as practical. If you put the shaft coordinating drive inside the main drive [on the same side], one guard covers all the finger-biters. With the tumblers I've built, I found properly mounting the guard to be a bigger challenge than building it, rather do that once than twice.
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Post by Drummond Island Rocks on Oct 17, 2013 8:05:35 GMT -5
Thanks for all the thought's on this. I am still thinking it over. I think I would keep all the lumber as shown and here's why. If you walk into home depot or lowes and grab a 3/4" x 2ft x 4ft plywood panel, an 8ft long 2x10 and an 8 ft long 2x4 you can then have them cut everything you need to size for free right at the store. The shafts are sticking out a little longer then needed and that was just to avoid an extra cut on the main drive shaft by keeping it stock 36" length.
So the way it is shown it can be built without cutting any lumber at all and only cutting one shaft to length (hacksaw or sawsall). So really its just assembled with a little wood glue and some decking screws, (8) bearing bolt holes and (4) motor mount holes and that's it.
I do like the idea of putting all the pulleys on one side for safety but that does mean that to replace the small belt you would need to take off the large belt and the large pulley to get to it.
Chuck
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mibeachrocks
starting to spend too much on rocks
Member since September 2013
Posts: 198
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Post by mibeachrocks on Oct 17, 2013 8:51:42 GMT -5
Go for it. It is a great design.
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Oct 17, 2013 10:54:56 GMT -5
The idea of getting everything precut at the store doesn't fly nearly as well here. My thinking on burying the coordinating belt is that it will likely last for many years, and not overly inconvenient to change. Not to say putting it on either side is wrong, just my opinion. Still do like the design idea. Larry
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Post by Drummond Island Rocks on Oct 17, 2013 11:25:23 GMT -5
All of the dimensions and all the mechanical parts for this design are stolen from the tumbler we built a couple years ago. I would not say it eats belts but after running 24-7 for a year it did need new belts and these are 1/2" wide automotive v-belts. Here's my tumbler for those who may not have seen it. The side doors are off in the photos since they were taken during assembly of the second level. If you click here you can see a viseo of how all the mechanics work s1183.photobucket.com/user/drummondislandrocks/media/tumbler%20pics/unloaded_zpsee9750cc.mp4.html?sort=3&o=6thanks Chuck
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mibeachrocks
starting to spend too much on rocks
Member since September 2013
Posts: 198
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Post by mibeachrocks on Oct 17, 2013 11:43:02 GMT -5
Wow!!! Craftsmanship at its finest.
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Post by wireholic on Oct 17, 2013 12:24:09 GMT -5
Nice!
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Post by pghram on Oct 17, 2013 21:37:30 GMT -5
You should definately publish & sell those plans. Great tumbler!
Rich
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