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- Jul 28, 2017
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At the risk of diverting your thread, are you associated with the Rogue Brewery or just a fan?
At the risk of diverting your thread, are you associated with the Rogue Brewery or just a fan?
If you think your head hurts now, wait until you see what happen when tools and fixtures deflect ever so slightly.
If you examine anything under enough of a lens, flat surfaces appear like potato chips, and polished work looks like the cratered face of the dark side of the moon. Without oil, ground ways sliding past each other appear like the Alps being inverted and dragging back and forth over the Pyrenees. It's all relative, so don't trip up over a number until the decimal point creeps far enough to the right to fuss over. Of course, it's fun to measure and examine, it's part of learning. Perspective has to be learned individually, though. My perspective is that you'll forget all about the bow in the table once you start milling away metal.
Edit: .001 accuracy takes a great amount of work to attain in manual machining. Unless it has a fit requirement with another part, I'm content with .005 most of the time. Only critical fits require more, for the most part. Check out some manufacturing tolerances called out on blueprints and things around the web, most production work is held loose so the part is more feasible to produce.
I was not aware that these were offered as downloads. Do we really have rights to do that? The books are still available from the publishers:You can't go wrong with Harold Hall, his projects are well thought out and he is an excellent teacher. My favorite things to make with my tools are tools for my tools. The Workshop Practice series of books is available in our download library if you haven't pulled them already:
Workshop Practice Series - Tubal Cane
Each file is one chapter. Some files are > 30 MB.www.hobby-machinist.com
Since you need cutters for the mill, it might be worthwhile to make one of his grinding rests and tool grinding fixtures for the bench grinder. You'll be able to sharpen a number of tools with it, and it will save you money. It is also a start in grinding your own tools as-needed, instead of buying and paying and waiting when you need that one tool you don't have on hand.
If I can't hold it in my hand or put it on a shelf, it's just an "evaluation copy". I own Harold Hall's chapters in hard copy because I liked the evaluation. Isn't that how things are supposed to work?I was not aware that these were offered as downloads. Do we really have rights to do that? The books are still available from the publishers:
Harold Hall | Special Interest Model Books
www.specialinterestmodelbooks.co.uk
Craig
I hope you are joking...but there is no smiley face. Just in case:If I can't hold it in my hand or put it on a shelf, it's just an "evaluation copy". I own Harold Hall's chapters in hard copy because I liked the evaluation. Isn't that how things are supposed to work?
So it is OK to steal Mr. Hall's intellectual property since "our site is so small"?!? Who do you think is the target market for his books??You're not exactly beating on a bee's nest, since our site is so small, but I don't think making an issue out of this is a good way to go. Taking something away from a group you're part of might taint the water next time you come by for a swim. We usually learn that stuff on the playground.