Building my own design cnc saw machine

It could be that the blade is not sharp enough, or you are running too high a surface speed. I'm not sure of the type of grind that they put on the dedicated saws for wood turning, but on my router setup which is like a saw at 90 deg. My router cutter is ground so that it cuts on the side as well as the diameter. When I tried a saw blade, when ever the depth of cut exceeded the width of the blade, ie it started to cut on the side of the cutter, not just accross the whole face, I was getting burning. On a 1 inch dowel, the max cut depth if the tool is on centre line is 0.009 inches, so I had to take less than 20 thou on diameter at a time.
Neil
 
JC,

Great design and craftmanship. A like lifetime ago I was told to only use one type of saw blade and needed to bring it in to a shop to have them make the cutters on blade all the same size. I did and somehow it worked.

You might have some small Hic Cups but I am sure you will get it like glass.

Worse case scenereo you can cut wood tapered up to last couple of passes and walk away to do other things.

Thanks for sharing with pics, I think you have a lot of people thinking :thumbup2:
 
That thing is a beast!
That cocobolo cut was quite impressive.
I have to cut my blanks to a octagon shape and do four passes atleast to get to where you got to in one pass.
What is your total cost estimate?
 
I did all the work except boring the holes for the bearings in the aluminum blocks for the spindles. I sent that to local machine shop on the advice of a buddy and it was terrible advice. I didn't ask for an estimate ahead of time because it seemed to me to be a quite straight forward task that would take what it would take to accomplish. When I picked it up I had quite a surprise. They charge 75 an hour and I was to believe that it took an experienced machinist more than one entire work day to bore those two holes and drill the holes to bolt the two halves together and to the rail bearings. Wow I was not happy about that decision I made to use them. So including that $750 boo boo the entire cost of the project including the used delta saw was a little under 3 grand. I bought all the CNC rails and screws, motor mounts, couplers etc from E bay China. Also a used micro Lenova ThinkCentre pc box that I loaded XP and mach on and a used monitor. All from E bay. Bought the 1" aluminum plate locally. 12"x84" It was $375. I sold my old blud machine for $2500 including some instruction which I never received when I got it. So It came out pretty well economically I thought.

JC
 
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