expoxy release agent

[bjr]

The term "release agent" is one I can't say where I heard it. The local Loctite dealer doesn't have anything on his shelfs either and hadn't heard of anything. What I want to do is build up a hub on my tiller on the nondrive end maybe 1/16 to 1/8 inch diameter on the hub where the bearing goes. The bearing is maybe 2-9/16 in. OD. The epoxy is the stuff that comes in two adjoining tubes used for cement repair. I don't remember brand specifics. I want the bearing to be installed and then be able to be removed when needed, thus the release agent. Is there any such thing? Otherwise I'll just find a tin can and shim it to take up the space. bjr

 

[studor]

There is a release agent in kits to epoxy bed gun barrels in stocks -- a good coating of paste wax or "Future" floor wax does the same thing. Coat the surface of the bearing that will be in the epoxy and you will get a perfect casting if you remove it when the epoxy is just about cured. Just make sure that the epoxy does not overlap the bearing bevel or face surface in any way
regards
Steve

 

[Ford850]

I've used a release agent from Brownells gunsmith supplies. I use it when I glass bed an action to the stock. It is a very thin release agent so it makes for a very snug fit when the project is complete. I've heard of paste wax and silicone pastes or oils used as release agents too.

 

[jinman]

I googled "epoxy mold release" and got lots of hits. I used to work in the Dept. of Geosciences at UTD. We created many epoxy castings of rock samples that would be sliced, polished, and analyzed using an electron microprobe. The mold release we used was in an aerosol can and contained a parafin base, I believe.

 

[swines]

Hornady One Shot case lube or Synair Synlube 1000 release agent
http://www.claypeople.net/images/ClayPeople45-49.pdf
- page 51

 

[mjfox6]

You can get release agents and mold waxes here:
Wedges, Mold Releases and Clips - Fibre Glast Developments

 

[srjones]

I don't mean to hijack this topic, but I have a slightly different problem and hopefully the same eyes might have a solution.

I used some epoxy to set an anchor bolt into drilled concrete hole. The epoxy was either bad or I or I didn't get the mix right and it's never hardened (and I don't think it ever will).

Any suggestions for getting the it out of the hole and starting over? The hole is 3/4" x 5"

Thanks,
-srj

 

[tommu56]

I don't mean to hijack this topic, but I have a slightly different problem and hopefully the same eyes might have a solution.

I used some epoxy to set an anchor bolt into drilled concrete hole. The epoxy was either bad or I or I didn't get the mix right and it's never hardened (and I don't think it ever will).

Any suggestions for getting the it out of the hole and starting over? The hole is 3/4" x 5"

Thanks, -srj

Put a hole just a little bigger than bolt in a steel plate and pull stud through plate with a 2 jacks and another plate. It will keep concrete from braking too bad.

If epoxy is soft it shouldn't be hard to pull out
Drill out epoxy with a regular steel drill redrill concrete out to the next size bolt.

It depends on what you want to hold as to the best anchor, Epoxy anchors are finicky a dirty hole too cold all pose problems.

Thunder stud, Kwik Bolts and trubolt are good drive in and wedge type anchors.

tom

 

[bamatoolmaker]

I use Trewax everyday as a release agent for epoxy,urethane, and polyester resins.The secret is 3 coats and buffing after each application.Even when your catalyst ratio is off when mixing epoxy.It may still get hard.Let it set for a couple of days or add a heat lamp ( 70 deg is the optimum temp for pouring and curing all the plastics I generally use.)

 

[Eagleview]

No epoxy is going to build up that sort of depth and last . If it is just a loose fit the best way to tighten it up is to go around it with a center punch . Put a pop mark every 1/8" all the way around the shaft , cover the entire area . This raises metal and makes for a lasting repair . Then knock the bearing back on . You can also add some Loctite Bearing mount to make doubly shure .