Grading stipple on dies set

[oldgoaly]

Ok gang I have this Marchant Brochure and it has a grading of 1, 2, 3

grading1.jpg

and a mention of 0 as super fine! just like my women.....
Are there other companies that have a grading system, are they grading the size of the deposits? or the concentration? or a combination of both? tt

[Rick Mullin]

Terry,

I had my Erco dies re-stippled years ago. The first time it was through Erco and the second time was through H. P. Townsend Co. Erco had three grades also. I had an original set that was the smoothest. It had a tendency to slip on steel. Part of the problem way be because my machine is old and has some slop on the lower holder. I had a coarse set done and all of the other sets were done as medium stippling. It would appear to be a function of the depth of the stippling not the amount across the surface. The coarse are very aggressive and I would probably not do that again. They all leave some marking but I always file and sand my panels anyway. If you look at hand made Ferrari panels from the 70s and 80s, they have serious stipple marks. The entire panels were made on Ekold machines with very aggressive dies.

Fay puts a piece of 400 grit sand paper on his Marchant when he does not want marking. It works well on a powered single shot machine that is in good condition. My powered Erco is a cycling machine and the paper gets bunched up.

Rick

[Carbuilder]

Rick what is a powered cycling machine. Is that like a erco 476.

[Rick Mullin]

Danny,
Yes a 476 fully cycles as does the Eckold Piccalo and larger units. They have large fly wheels that give some real momentum.

Marchant made a pnuematic unit that could do a controlled single shot.

I also have an Erco 1447 (foot stomp shrinker). The stippling certainly can effect the efficiency of the tool.

Rick

[oldgoaly]

Danny,
How do you do stippling? are there more than one grit? you can apply? tt

[Carbuilder]

TT what I do is the coarse style for more grip & it lasts longer. If I have a customer that wants it finner I hit the top with a diamond sand block & smooth out the coarseness slightly. I try & leave that up to the customer on how fine they want the grip surface. Hope that makes sence.