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The fellow at the hobby shop expressed a personal preference for Scenic Express over WS, but advised that I pass all of the material over a magnet before using. Being crushed rock, there’s always a chance that there could be trace amounts of iron minerals which, in time, could foul electric motors. Seems like a sensible precaution to me, it’s easy enough to do, and one would certainly know in pretty short order if the magnet is extracting any detrimental stuff. Just out of curiosity, I’ll give it a try.
I was going to order a large bucket .. but the shipping was as much as the product .. I think I'm going to the stone store and get some granite dust to sift myself ..
We have stone stores in my state. They sell cannabis.
I sometimes wonder how much of this is true anymore .. if it's properly applied with diluted glue or matte medium, I doubt that there is much of an impact .. but then again, it doesn't hurt to take precautions. I have a MOW car with a set of magnets just above the track that I run with my slider cars
My sense is it is a hangover from when modelers often collected sand from urban areas for layouts. Metal and metal fragments are common contaminants in these settings.
Also probably from when locomotive motors were the size of softballs.
FWIW, when I use a magnet to remove gritty stuff from something, I always put some cover like cling wrap around the magnet, first. This allows me to peal off the grit when I am done. Because, it isn't going to wash off, blow off, or even come off in a media tumbler - and scraping it off is not thorough at all.
https://thestonestore.com/
signalmaintainer: Pasco sand is slightly radioactive, but so is everything else in the world. It comes from natural uranium, thorium, and other such elements in the rocks.In the 60s, in grade school, the schools had regular visits form a "whole-body radiation counter", a big thing in a truck trailer that someone could lay in. It measured just what it sounds like, how much radiation a body gave off. Pasco students were no more radioactive than Spokane or Seattle
Oh yes, I remember those. When I was in kindergarten, 1962/63, we had a late 50s Ford station wagon. After one storm, while Mom was up there for a conference, it needed new paint and new windows on one side. The kindergarten then was in an old Navy building at the Pasco airport, across what's now Glade Road/4th Avenue from the yard, and there was nothing to block the sand. The wind used to pack so many tumbleweeds under the cars in the yard that the cuts would derail when pulled.Here's a song you might enjoy, about the Tri-Cities. I couldn't find the version I have, by Linda Allen, the writer, but the words seem to be the same. I never heard the term "Termination Winds" until the 1990s, long after moving to Kentucky, but apparently it was common in the 40s and 50s.https://www.youtube.com/watch?v=27iyEoCZVk4Judging by online news reports, the Tri-Cities don't have sandstorms today. No-till farming, irrigated subdivisions, and pavement have tamed them. Today the have thunderstorms and flash floods, due to the higher humidity, from the irrigation!