Router Bits and EndMills: Pictures, Descriptions, and Uses - Page 24


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Thread: Router Bits and EndMills: Pictures, Descriptions, and Uses

  1. #277
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    Quote Originally Posted by Merijeek View Post
    I have to say, I appreciate this thread. However, the sticky really makes it seem like its most useful if one already has some idea what they're looking for. Unfortuantely, I don't.

    I'm just getting started, but I'm having a very hard time determining the correct bit for a project. For example, I've got this coaster here: https://easel.inventables.com/projec...Xd0LYBqL2CghEg

    Should be pretty simple. But, unfortunately, I can use 60 or 90 V-bits and it gets close to usable - some of the letters are still a bit deformed. If I try a ball-end, I get total garbage - a circle with some blobs.

    I've got a 10-degree v-bit that might work, but the estimated time is more than 50 hours, which is obviously nuts for a 4x4 coaster.

    Can anyone offer any suggestions here?
    In VCarve, you can select a flat area tool to clear the field, this looks like it can be up to a 1/8" flat endmill. The finishing toolpath would be with your v bit. If you don't have VCarve, you probably can do this using a flat endmill, leaving half the diameter of your v bit at final depth along the sides, then do a pencil trace with the v bit... but that would leave tiny islands that you'll have to manually touch up. Point is, you need CAM that allows what we call "rest machining" so you can clear the field with a larger tool.



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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    Quote Originally Posted by LouF View Post
    Hi what CAD and CAM software are you using and what machine are you using?
    I'm using a BobsCNC E3, and the software I've tried has been Easel. I've messed with Vcarve a bit, but only the free version so far, which isn't worth a whole lot.



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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    Quote Originally Posted by ger21 View Post
    Looks like it's just pocketed. In that case, use the largest straight bit that will give you the detail you need in the letters. This may require a very small bit, which can take a lot of time. You could also use a larger bit to remove most of the material, and a small bit to clean up the letters.
    OK, going with that advice I've run a simulation with a 1mm cutting endmill followed by my 10-degree v-bit. Total time looks to be about 2h30m. Which is certainly a move in the right direction. Now I need the new bits to actually arrive.



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Router Bits and EndMills: Pictures, Descriptions, and Uses

Router Bits and EndMills: Pictures, Descriptions, and Uses

Router Bits and EndMills: Pictures, Descriptions, and Uses