Hi. I have the motor for the mixer. I'm planning to use the flex coat mixing cups. What are you guys using to hold the cup (the part that mounts to the motor shaft)? Also, where did you get the steel mixing balls? Thanks for your time!

You can take a cork ring and epoxy it to the motor shaft. Build the shaft up a bit if you have to. Epoxy a cup on top of the cork ring.

A second cup is dropped into that one. When the mixing is done, left the second cup out of the first one.

..........

Kevin,

What I did was use a scrap piece of 1/2 inch thick mahogany (or any other fairly dense wood) and cut out a cylinder with a hole saw.

Another hole was then drilled into the side of the cylinder. A short, threaded aluminum sleeve was then epoxied into the side hole, through which a set-screw was used to tighten the base on the motor shaft. Overkill I'm sure.

After much searching for ball-bearings, I ran into a fellow who was a fisherman and worked at a transmission repair shop. Told him what I was trying to build and he gave me some bearings in the ball size required. Each bearing had a number of balls and it took a while disassembling the bearings to get the balls free. The outter bearing case is tough stainless steel on these suckers. Used a dremel cutt-off wheel, eye protection & patience.

Hope this helps.

Stan





Edited 1 time(s). Last edit at 04/21/2006 05:13PM by Stan Gregory.

You can go to Lowe’s. In the plumbing department they have caps for gluing on the ends of pipes. Look for them in the PVC pressure fitting’s area. (not the drainage fittings). Take a cup with you, they will have them from ½” up to 2”. Pick out the size that works best for the cup you are using. Mount to shaft, your good to go.

If you would rather use rollers instead of bearings, you can get some Titanium Carolina rig worm weights at the tackle store that will do the job

Go to a sporting goods store that sells sling shots. They ususally have ball bearings that are used for sling shot ammo.

Next time just wrap the bearing up in a shop rag/towel and place it in a sizeable vise and apply ampel enough pressure to pop the outer wall. The balls will come right out.

Jay

Jay, that's good info. Wish I'd known that before tackling with the dremel.

Stan

If you have an acetaline tourch or plasma cutter, you can also make quick work of the outer bearing.

Jay

Has anyone ever tried a laboratory-style heat plate / magnetic stirrer? I use these all the time at the lab I work at, and always wondered how they would do on epoxy. I would think it would be great with a small stir bar. Not that I need one, just wondering...They're probably expensive.

Ray Vinzant
Juneau, AK

If you can't find a bearing to destroy then you can find them at www.mcmaster.com. They are stainless steel. Part # 9291K27 these are 5/16 dia. and are sold in a package of 50.

Lowe's sells them.