Edwards E2M12 Vacuum Pump Teardown and Overhaul

   High vacuum is one of those things that really suck.... Sorry, couldn'd help it.    Parts are expensive, finnicky and not always readily available to anyone.     I recently bought an Edwards E2M12 vacuum pump for a project of mine. When I got it, it came without any oil and without any idea of the state it was in. But for the money I paid, I couldn't just pass it.    So, I now have a vacuum...

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Making drafting pens great again. Rotring Rapidograph refurbishing

     Great title, huh?   Ok, so in a previous post I showed off my drafting pencil collection and wrote some personal notes of what I think about the Rotrings, Pentel and Kuru Toga.    Now it's time to show you another, more dark part of the story...one involving black drafting ink (Pulitzer nomination for this posting, I guarantee it)   I mentioned in a post a while back, that I found some Rotring Rapidograph...

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Pencil Review: Rotring 800, Rotring 600, Pentel GrapghGear 1000, Uni Kuru Toga Roulette

           Yeah, I know. Weird, right? I know it’s not what you’d expect, but hey… I felt inspired.     For those that don’t know me,   I have a bit of a pencil fetish, and also I haven’t seen a review of these from an engineer, so I figured I might just as well. And just as a mention, no, I don’t use the pencils for “art” purposes. I can’t draw a picture to save my life, but what I do draw...

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