Re: [CAD_CAM_EDM_DRO] Re: Moglice

I have done a good bit of digging on this topic.

Moglice is a German company, maybe the name has some more meaning there.
It is sold in the US through a company called Devitt Machinery. I had
one of their sales engineers speak at my model engineering club. He
brought in several sample pieces and talked about a lot of repairs. He
wants people to use Moglice not as just a repair, but as an original
manufacuturing process. see http://www.moglice.com for lots of detail

The smallest lot sold my Devitt is something like 2cu in for $40. They
strongly urge you not to try to subdivide the kit, and they do not give
a mix ratio, just say to add all the hardner into all the resin and mix
well.

I also met a sales guy from Philadelphia resins at EASTEC. He of course
said their product did everything Moglice did, only better, and cheaper.
Their smallest kit is about 6 cu in for $60. Thats what I bought.

Moglice says the slippery agent is moly-disulfide. The Material safety
data sheet with the Philadelphia resins stuff only list 'carbon' as a
component.

A friend in my club has offered to take a sample of my Phil Resin and
determine what the ratio of carbon to resin is. I havent taken the
sample to him yet, but I will.

So far the only nuts I have made were for my Sherline. I think I posted
a bit here when I did that. In short, I used the sherline brass nuts to
hold the screw in its correct alignment, sprayed it good with the
release agent, and injected the epoxy with a plastic syringe. I let it
flow up and out to eliminate bubbles.

After overnight cure I unscrewed the leadscrews and trimed off the
excess. The Sherline works very well, the screws are smooth and even and
have no measureable backlash. I have run a few test patterns with my CNC
control, but have not yet made a real part, so I cant say much about
lifetime. The nut is about 1" long in total, and is thinner than moglice
reccomends, they say about .062" min thickness, I have a .250 rod in a
.312 hole.

I intend to do my Grizzley mini mill. I almost did it on Saturday but a
few other things got in the way. 'Real soon now'

I am convinced that making moglice nuts to fit NEW threaded rod stock
will make a very useable leadscrew for CNC systems, at least for
homebrew stuff. I would not even consider it for worn rod, no matter how
little wear.The stuff casts tight, with no shrink of the epoxy. Castign
it onto a worn rod would just not work.

I will report here when I do the grizz nuts.

ron