droseraguy
Cave Dweller
Member since April 2012
Posts: 426
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Post by droseraguy on Mar 24, 2015 17:57:08 GMT -5
Thanks for showing us the progress, I've filed away some good stuff from here. +1
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Mar 24, 2015 18:10:37 GMT -5
Thank you, sir. Jan, here's a pic of the back of the unit.
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Post by fantastic5 on Mar 24, 2015 20:41:00 GMT -5
Wow!!! Great build!!! I really like how it all came together.
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Post by parfive on Mar 24, 2015 23:45:57 GMT -5
Nate - Looks like you’ve got two hard wheels on the far left. Likely the heaviest too.
Best balance/should run smoothest with one on each side, on the inside, right next to the bearings.
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Post by gingerkid on Mar 25, 2015 7:51:02 GMT -5
LOL, and thank you, NDK, for posting a pic of the back of your killer cabbing unit. What size are the jugs (ahem)? Pretty cool that you can place a polishing pad on it later if you decide you would like to use one on your machine. I wondered after reading parfive's post if the machine would 'bend in' (?) since there are not bearings on the ends of the shaft, but I guess the weight/size of the shaft with the bearings on the inside of the shaft makes it so that won't happen. ??
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Mar 25, 2015 12:01:55 GMT -5
Jan, the label on the jug says 5 gallons. They're approximately 12" wide, 10" deep & 9" high the way they sit over the wheels. IIRC my brother said they came from a cheese factory. my original plan was to have the bearings on the ends, but there's several commercially made units with this same design, so I figured I was safe.
Parfive I understand the balance concern, but it runs smooth so I'm leaving it as is. I'll definitely keep an eye on it tho, because the wheels are quite a bit farther out than on a genie etc.
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Post by gingerkid on Mar 25, 2015 12:30:03 GMT -5
Thank you, NDK!! I also like how you have your wheels arranged specifically for your use since you are left-handed. I have your thread bookmarked for future reference. Thanks and looking forward to seeing your cabs that you make with your machine. oops, almost forgot to ask you. How much time did it take you to build the unit and how much moolah did you spend for the parts, including your wheels?
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Mar 25, 2015 13:08:21 GMT -5
Jan, I spent 4 days building the machine. That included many trips to town for parts, a lot of standing around looking at it, and home obligations also mixed in there. If I knew what I was doing and had all the parts it probably would have only taken a few hours. I spent just under $100 on parts, and the wheels were $377 including shipping.
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Post by 1dave on Mar 25, 2015 13:42:03 GMT -5
Thank you, sir. Jan, here's a pic of the back of the unit. You need a Romex cable connector to keep the vibrations from causing a short, and the motor should be grounded. I put a large door hinge on the front of my motor and a long bolt on the back to adjust the belt tension. I like manofglass's idea of drillin hardwood for bearings!
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Mar 25, 2015 14:00:54 GMT -5
Yeah that cord is temporary. I plan to run conduit to enclose the wiring and also add a switch somewhere convenient. Just had to get it together before figuring out what parts I needed.
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copiahdad
having dreams about rocks
Member since April 2012
Posts: 72
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Post by copiahdad on Mar 25, 2015 21:58:18 GMT -5
Great looking machine you have built there. How rigid are the jugs you cut? I rest my hands on my water tray while I'm cabbing? Is it stiff enough to support your hands? If not, you might want some kind of support just inside the tray. I bought this old 5-wheel cabbing machine a couple of years ago. Looks like hell but has worked just fine. However, the inside wheels are a pain to change. But following your build on this thread has gotten me to thinking. I've got a Jet buffing machine that I could just buy wheels for and slide them on. It has a 1" shaft. I'd then just need to build a hood and tray. In the picture, there are a couple of wheels that came off my old cabber just to see how they fit. What did you use as spacers between the wheels? I was thinking about PVC. I could even go with 8" wheels. What are pros and cons of 6" vs 8"?
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Mar 25, 2015 22:49:55 GMT -5
I used PVC for spacers. It works well.
This is my 1st experience with cabbing on wheels, so I have no opinion on 8" wheels.
You may want to check the speed on that buffer motor. I think they may run faster than 1725.
I almost forgot to add, the walls of the jug are 1/8" thick, & the ends are about 3/16".
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Post by johnjsgems on Mar 26, 2015 10:35:56 GMT -5
I was going to ask buffer speed as well.
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copiahdad
having dreams about rocks
Member since April 2012
Posts: 72
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Post by copiahdad on Mar 26, 2015 18:23:22 GMT -5
Most bench grinders do run at 3450 but this buffer/sander has a 1HP motor that runs at 1725.
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vwfence
has rocks in the head
Member since January 2013
Posts: 557
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Post by vwfence on Mar 31, 2015 9:47:11 GMT -5
What is the speed of the wheels and how much run out is there on the outer wheels
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Mar 31, 2015 11:22:10 GMT -5
I don't know the surface speed of the wheels, but the motor runs 1725 & both pulleys are the same size.
As far as run-out, the only thing I get is a slight vibration using the 3000 wheel, which is the far right. All the rest run smooth.
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Mar 31, 2015 20:20:19 GMT -5
I think I can say this build is complete. Tonight I finished installing the drains in the hoods. I just need to add the drain tubing after the silicone dries. Rear view - Grounded cord installed. I'm not sure why they marked rotation on the motor as it's reversible lol. I was going to run conduit and a switch, but this was simpler and I use a switched power strip anyway. Front view - Nylon strap added to control water splash off the wheels, and drains installed in the hoods. As you can see there's already rock snot on it. I really enjoy cutting on wheels compared to disks. My flat lap will probably sit in the corner and pout now lol.
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copiahdad
having dreams about rocks
Member since April 2012
Posts: 72
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Post by copiahdad on Mar 31, 2015 22:57:16 GMT -5
Looks great! Enjoy!
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Post by parfive on Mar 31, 2015 23:06:24 GMT -5
Flat lap can still ensure flat backs. Wheels can’t.
I lap the backs to 500 after preform is done and before dopping. When the dome is polished and the stick comes off, last couple of wheels get the back polished in seconds.
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Apr 1, 2015 7:32:46 GMT -5
Yup, flat lap has definite advantages. Will still get used occasionally.
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