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Author Topic: CNC Flattening  (Read 800 times)

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Offline Crusarius

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Re: CNC Flattening
« Reply #20 on: January 15, 2022, 09:30:17 AM »
metalspinner. the only difference between a CNC router and plasma is most of the plasma tables have a manual Z height adjust. other than that you are correct its the same CNC technology and parts.

Offline customsawyer

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Re: CNC Flattening
« Reply #21 on: January 15, 2022, 10:02:19 AM »
I have 3 different machines I use for slab flatting. My go to for 95% of what I do is a 30" Cantek double surfacer. It doesn't use feed rollers but rather a carpet type of feed system that is almost the full length of the machine. There is also almost 4' from the bottom head to the top head. This gives the piece lots of room to get stable. It does have trouble with a piece if it is twisted. When this happens I run the piece across the 20" jointer to get a small flat reference face and then take it to the Cantek. Third I have the WM Slabmizer. This is used if the piece is over 30" wide. The biggest draw back to the Slabmizer is that it is slow. I can run 75-80 slabs twice through the Cantek in the time it takes to plane 2 boards on the Slabmizer. The Cantek was about 10 grand more than the Slabmizer.
How wide of slabs are you looking to flatten?
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Offline Crusarius

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Re: CNC Flattening
« Reply #22 on: January 15, 2022, 10:10:48 AM »
customsawyer, if you were to be able to just set it up and walk away would that make the slabmizer a better option for flattening? Or would the slow speed still be an issue and not get used?

Offline customsawyer

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Re: CNC Flattening
« Reply #23 on: January 16, 2022, 07:49:16 AM »
I think that is actually a option on them now. I think it would slow the process down some but it would free you up to do something else. Keep in mind that on the wider slabs any cup is magnified by the extra width. So your first few passes are normally on just a couple of corners or in the middle due to cup. So I'm able to just skip around hitting the high points. Once you get to where you are almost cleaning up the entire slab then the auto feature would be nice. Trouble is by then you are enjoying seeing the grain in the board and couldn't walk away anyhow. ;D
Some slabs will start to lift a corner as you are planing on such a small section at any given moment. I like to be right there to keep a eye on things.
Two LT70s, Nyle L200 kiln, 4 head planer, 30" double surface planer, Lucus dedicated slaber, Slabmizer, and enough rolling stock and chainsaws to keep it all running.
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Offline Walnut Beast

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Re: CNC Flattening
« Reply #24 on: January 16, 2022, 08:09:11 AM »
Is that Cantek three phase 

Offline Walnut Beast

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Re: CNC Flattening
« Reply #25 on: January 16, 2022, 08:18:39 AM »
I guess at 25 to 30 hp it is 😂

Offline Stephen1

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Re: CNC Flattening
« Reply #26 on: January 16, 2022, 10:20:59 AM »
The slabs I would flatten woud be in the 30" range as that is what my mill will saw.  The carpenter would want to flatten the table tops, epoxy pours, and he wants to cnc his high end cabinets he builds. 
He will be the one hiring staff to work with him. He would flatten slabs for me to sell. 
I  would then send the slabs and lumber down to him to build tables or furniture.
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Offline customsawyer

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Re: CNC Flattening
« Reply #27 on: January 16, 2022, 11:11:08 AM »
WB Yes the Cantek is 3ph. I don't remember exact hp but think it is 30 for top and 25 for bottom. I now the feed motor will push the 20" jointer if you don't catch the board fast enough because you're trying to get a cool picture.

Stephen 1 The slabmizer with the auto feed would do good on the tables. Keep in mind that the knives don't like epoxy and the blower doesn't either.
Two LT70s, Nyle L200 kiln, 4 head planer, 30" double surface planer, Lucus dedicated slaber, Slabmizer, and enough rolling stock and chainsaws to keep it all running.
www.thecustomsawyer.com

Offline RonnieP

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Re: CNC Flattening
« Reply #28 on: Yesterday at 06:17:49 PM »
I have been using CNC's for about 12 yrs. it is amazing what you can create with them I currently have a 12' x 60" table using Vectric Aspire software. It can flatten slabs up to 60" wide  and 12' long hardest part for me is getting the heavy slab moved on to the CNC then you create the g-code in Aspire or V-carve pro it only takes 5 minutes to create if that, hit start and let it work. The other thing I really like about the cnc besides flatting is using it with straight bit to joint the edges of slabs when joining slabs for tops they are dead straight when finished no more trac saw or wrestling with heavy pieces on jointer. Like some one else mentioned you can do tons of other stuff on with a CNC I even make my own tuned table legs with the rotary on the CNC.  
Yes they can be a little pricey but if you are doing custom wood working the capabilities and the accuracy it allows you are well worth it I have been able to build some projects that were not possible for me with out it. If you only intend to flatten slabs then maybe not worth it but they have been well worth the investment for me. 

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Re: CNC Flattening
« Reply #29 on: Yesterday at 08:45:37 PM »
I still feel that a fully automated CNC setup just for flattening slabs is totally worth the cost due to the time savings. It is almost like having 3 of you. It can more than double your productivity.

Most difficult part is to level the slab. I have this really kool slab leveling table in my head that would work wonders for all of us :)

Offline customsawyer

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Re: CNC Flattening
« Reply #30 on: Today at 05:38:59 AM »
To level the slabs I just use small felling wedges. On the first face there is usually one or two corners up off the bed a little. I just slide a wedge between the bed rail and the slab enough to support it. I try not to push the wedge in enough to lift the slab, just support it a little.
Two LT70s, Nyle L200 kiln, 4 head planer, 30" double surface planer, Lucus dedicated slaber, Slabmizer, and enough rolling stock and chainsaws to keep it all running.
www.thecustomsawyer.com

Offline Crusarius

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Re: CNC Flattening
« Reply #31 on: Today at 10:03:12 AM »
do you fasten it down at all or just rely on gravity to hold it?


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