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CNC edging

Last Post 12 Nov 2009 02:22 PM by Brian Stone. 4 Replies.

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Ed Sautter

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27 Oct 2009 10:02 PM
I have another question for all you guys. I'm being asked as to the footage amount that cnc edging and polishing will last. In our shop we do both granite and silestone so we have a mix of both. We work our sink cutout's with a A30 R5 bit and based on an est of 8' per sink do about 195 per 20 days. That is 1560' per month or 78' per day. I'm thinking I'm in the ball park with what we are doing. My bits last about 1 1/2 months. That gives me 2300' or so on a bit. By then they are in need of replacment. So question is what are the #'s you guys are getting? Am I off and should I be producing more for my money? If so how much is a good #? I checked with the supplier and the # he gave me was 2000 meters. I did the math and see it's 6562'. That # seams really high to me. At my rate I should get 4 month and that just isn't going to happen. Does that seam high to you guys or not?

Andy Graves

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29 Oct 2009 10:44 PM
I don't have a stone cnc, but everyone I have talked with, don't really have exact numbers. Even on solid surface it is difficult to calculate. You are way far ahead just knowing the footage per bit.

FabNet Administrator andy@thefabricatornetwork.com Countertop Company - www.OliveMill.com

Brian Stone

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31 Oct 2009 01:24 PM
I'd check at the "new" site for questions like that... http://www.stoneadvice.com/forum/

Ed Sautter

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12 Nov 2009 01:24 PM
Andy, I'd think in this manufacturing enviroment everyone would know what they are capable of. I can tell you that we can make 60' of bullnose finished on our edging machine and be quite accurate. It does take some time to fine tune and follow the #'s but isn't it all about the #"s anyways? If I am the only one looking at the #'s then what #'s do I hold the bit producer to? He has to test the bit right? If he's not and just throwing out #'s then I have no control to work with. I need to know that for every $ we spend we get this much and can chanrge this price. I would rather have a better idea than to just guess as it sounds many without the #'s do. I am producing in shop per week, at 60 jobs. That's a fair amount and with my limited space I want every inch to count. Just thought maybe someone other than me would have done this before. Maybe they have and haven't replied yet.

Brian Stone

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12 Nov 2009 02:22 PM
The problem is that there are a lot of variables that come into play with tooling for hard surfaces. The variation in the materials that we cut are huge...even on one slab. Think about the differences between Zodiaq, Soapstone, Absolute Black granite, Iron Red Granite (this color has a VERY high metal content) The feed rates also make a huge difference. I haven't tested myself but I've heard that slowing some of the tooling down can actually double the life.

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