Re: Casting clearance

Wayde C Gutman wrote:

>
> This may be a stupid response, after all, it is 12:46 a.m.
> Any way, Ron Ginger is considering on using wax as a mold release on a
> acme form thread, groove 1/32" wide. Would not the wax at the bottom of
> the acme thread create a radiused bottom between the two walls,
> especially when the rod is dipped, therefore cancelling out the goal of
> having the lowest possible clearance between the rod and the epoxy ?
>

Yes, dipping in wax does not seem like a good idea. And you are right
on, the whole purpose of this exercise is to get a nut with the least
possible clearance. Ive already got some with lots of clearance :-)

I did not talk to Philadelphia Resins about my problem. I did call
Devitt Machinery and ordered some Moglice. 100gm kit is $39. I also
ordered there release agent. Id ont think it will arrive until Monday,
but I will probablymake up the new metal parts over the weekend, be
ready to cast the stuff when it arrives.

I am also going to use the 10tpi acme rod I have instead of the 16 that
came with the Grizz. With the setup of pulleys and motors I have the
16tpi requires 12800 steps per inch, more than I need, and starting to
limit my max speed.

ron ginger