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Forums > Fabrication, Installation, and Repairs > Solid Surface
EOS 3CM sink tops
Last Post 02 Nov 2008 10:39 AM by politefab. 9 Replies.
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Tom M
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01 Nov 2008 12:44 PM  
This is one of the commercial jobs we are running right now.
EOS Malibu, with the EOS vanity sink in white. We got this job strictly because it was rebid in EOS 3CM, versus 1/2" materials.

On the CNC:


Except for the thickness (volume of material) it responds like many poly-based solid surface materials. The extra mass does tend to chunk the dust together in tight spots:



We've tried a few different bits, including this up cut four blader, and a similar one with a serrated edge:



Here  is a near-finished product. The finish sanding is a bit of a chore, but the tops come out pretty good all in all:



The recess is best shown here:
"Our doubts are traitors and make us lose the good we oft might win, by fearing to attempt." - Shakespeare
politefab
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01 Nov 2008 01:54 PM  
back when i was the plant manager at solid tops and eos was still in it's developmental stages we decided that double fluted up-cut spiral bits worked best and step cutting helped as well the dust doesn't flake off it comes off like chalk dust. great looking vanity.
Tom M
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01 Nov 2008 02:22 PM  
Thanks, Eli.
Interestingly, Ken at EOS was talking about a down cut. I haven't talked to Evan yet, but I can't see where it would be an advantage. Probably in keeping the piece held down, but I think the extra dust, etc. would change the advantage.

Definitely step cut, for sure. With the serrated bit we were using, we would change the last cut to this one.

Two flutes? Do you remember what speed and rpm's you used?
"Our doubts are traitors and make us lose the good we oft might win, by fearing to attempt." - Shakespeare
politefab
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01 Nov 2008 06:35 PM  
i haven't talked to evan in a year and a half our parting was not a good one. and now we are competitors. i saw him at expo in passing i guess there is still some emotion there i have always liked ken i just think he made the wrong choice in partners but thats just my opinion.

when running the eos or any other projects we found that by covering the open parts of the cnc bead with laminate it would suck the pc down better
politefab
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01 Nov 2008 06:35 PM  
down cut does hold it to the bead but the dust clumps up try the up cut and the down cut in a double fluted bit and witch works best more flutes seams to make it harder to cut the stuff
Tom M
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01 Nov 2008 06:38 PM  
Believe it or not, if you zoomed in the top picture, you would see the area we actually put two screws into the sink cut out. It has helped out pretty good.
"Our doubts are traitors and make us lose the good we oft might win, by fearing to attempt." - Shakespeare
politefab
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01 Nov 2008 06:48 PM  
one thing that i came up with was making pods what i did was.i took 1" mdf and cut out a bunch of squares and circles in diffrent shapes and sizes than i painted the edges with fiberglass resin so the air did not suck through the sides. than i put weather stripping around the top and bottom edges. we would run a ghoast pass to see where the finished product would be than we placed the pods and sat the piece on the pods and covered the rest of the cnc bead with laminate when we did this we always used the down cut the advantage of the pods was that we could run every thing like a stone cnc. we would place the piece on the pads face down and by having it up off the bed we could run the sink profile and all of the edge profiles if you run say your bullnose bit and than a second pass where it only takes off 1/32" it comes out so you almost dont even need to sand it
Gene McDonald
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01 Nov 2008 07:27 PM  
Hey Yose EOS guys..did ya watch the seminar...anyway get this conversation in the SS thread...dont youse guys even try to tell me ya cut down a EOS tree
www.gotgreencountertops.com
Tom M
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02 Nov 2008 01:43 AM  
Greeny, I don't know how to tell ya this, but - well - it's in the solid surface thread.

Eli, I saw the AXYZ guys rig some stuff for a pod years ago. We silicone the MDF, but gluinbg ss together works pretty well too. I have never tried edge finishing/routing on a CNC. If I ever do stone/quartz, I guess I'll have to learn.

Good thought you had about the down cut working better with the pod. That's a good idea.
"Our doubts are traitors and make us lose the good we oft might win, by fearing to attempt." - Shakespeare
politefab
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02 Nov 2008 10:39 AM  
we put our pods directly on top of the disposable mdf bead thats why we used a thick weather striping around the top and bottom of the pod.

when you are doing one or two tops it does not matter but you are doing 50 or 100 it does make a difference by running them on the pods. we got the edges and the sink cut out (kholer 2210 ) to the point where all you had to do was hit the top and edges with a maroon and white scotch bright and you were done no routing edge profiles or sanding down from 100 grit we also cut "T" slots in the bottom for bolts so we did not have to glue on roto locks for mounting the sink. way cheeper than roto locks.

its nice when you can put your sheet on some pods run it take the finished piece off hit it with a maroon and white and your done thats with a multi cam cnc on the stone cnc you have to wait for the piece to dry out before you sand
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