jmm machines

got these in a trade seem decent reliable machines, does any one know much about the builder

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I have an old one I got for $25 from an artist looking for a job mines old and heavy real heavy, but it runs nice fast liner. That looks like its newer and lighter. I see him selling on eBay from time to time. That's about all I know. I just seen a pair of them for sale on ebay for $850 I think, I saw his name was Joel McDaniel

Been using these pair non stop last week for everything shading, colour, lining. Get a set seem bang on