Re: [ATM] Started Hogging

[Dave and Connie <dmatt@frontiernet.net>]

At 09:04 PM 1/21/2008, Bob May wrote:

>A bit complex and complicated but usable.  I assume that you're
>doing something in the 15" range for that depth.  You're final
>depth for the first hogging is a good one as you will be wanting
>to not go too far and mess up by having to remove a lot from the
>edges.  I usually go about that far myself with the iron tool.
>This allows me to constantly decrease the ROC as I go through the
>coarse grits and keep the center from getting unground relative
>to the edges.

Actually it is going to be a 10" f6 (I hope).  The Stellafane calculator 
gives me .105 as a depth so I figured that .090 would be a good target 
leaving me .015 to get the tiles to seat and remove the 60 grit damage.  At 
this point I am done with the 60 grit.  The job took 4-6 ounces total 
(quartz blank).

I was going to go with the pipe cap but found that I really couldn't get a 
hold on it.  I stopped programming 10 years ago from carpal and tendonitis 
on both sides.  The nerves are permanantly damaged.  The taller tool was to 
allow a good grab and I found that the nuts helped the cutting action.  If 
I was to make another I would pobably just glue the nuts in place.  That 
would give more projection, more even distribution, and a better bond.  I 
was down to the cement in places by the time I finished.

I am a bit disappointed with the cement tool at this point.  The top has 
gone concave as it cured.  The whole point of casting it on the mirror was 
for it to be convex and save the edges of the tiles.  I'll give it another 
day or two to move around curing and see where it ends up.

The epoxy is pretty much trash for me as I will only need a little for 
future boat repairs and I have about 1/2 gallon.

Dave

_______________________________________________
ATM mailing list http://www.atmlist.net/