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It only takes a few test cuts in different materials and differnt bits to get a feel for your particular machine. I was hoping to avoid the guessing process when it came to trying to duplicate something that the ShobBot folks were doing as a demo, over and over at multiple faires. Honda engine swapsĭave, sure wish we'd get some staff help in here! Anyway, from everything I've been able to find all feeds and speeds are SWAG, that is scientific wild ass guess and will have to be adjusted as necessary. What was used for the two color plastic key rings, etc? Thanks, -Dave Reply Quote. How realistic are the values in the VCarve Database? Is there any chance that the folks who have been demoing the heck out of the handibot the past few months could add a few values that have been working for them to the database? Definitive Guide to Feeds and Speeds for Wood.Go Back to handibot. Some tips: - Be sure to open a slot as wide as you can with a regular endmill that is also slightly deeper than the dovetail. They come in all shapes and sizes, but usually they look something like this: A V-Bit for Engraving… They do a very nice job engraving, but feeds and speeds can be a bit tricky for a couple of reasons. The concepts are applicable to any form cutter if you think about it. For diameter, be sure to use the diameter of the dovetail, not the shank. Chamfering cleans up the edge quickly without those complications. BTW, 2linc is a great manufacturer for all things engraving and is one seller of V-Bits.Ĭorner Rounding tools are used to apply a radius instead of a chamfer to the edge. That will cause it to figure out the rpm and feedrate differently. Once you select a V-Bit from the geometry menu, G-Wizard does several things. To select a V-Bit in G-Wizard, treat it like an endmill. Here is a diagram showing the effective diameter for a 90 degree V-Bit with a 0.
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Because of that, G-Wizard needs to do compensation to figure the effective geometry just like it does for a ballnosed endmill. First, that sharp point is a bit delicate and the geometry is not nearly as optimized for plowing through tons of material as a helical endmill. They do a very nice job engraving, but feeds and speeds can be a bit tricky for a couple of reasons. "ShopSabre Minutes" - Determining Feed and Speeds They come in all shapes and sizes, but usually they look something like this.
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Vectric ForumĪ V-Bit is a special purpose bit intended for engraving. V-Carve Bits for engraving, and Dovetail cutters are two good examples.