What is the best bit to cut 3/4" pine plywood ? Will be cutting out parts for cabinets. Best speeds and feed rates ?
What is the best bit to use for cutting 3/4" PVC???? Best speeds , feeds and depth of cut ????
What is the best bit to cut 3/4" pine plywood ? Will be cutting out parts for cabinets. Best speeds and feed rates ?
What is the best bit to use for cutting 3/4" PVC???? Best speeds , feeds and depth of cut ????
What CNC Machine are you using? ShopBot Standard or Alpha?
ShopBot PRS Standard 48x96
HSD 2.2hp Spindle; Vacuum Table
do you have a vacuum table? if it is smooth you can use a 2f downcut bit. I usually use a 1/4" bit to keep parts in place. two passes one climb almost through one regular through 3ips. 10k a compression bit is really good but it can cause parts to move more.
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For the plywood 60-123PLR, 3/8" 2 flute mortise compression, 546ipm 14400 rpm one pass to 3/4"
For the pvc 52-709, 3/8" 2 flute upcut spiral O flute for single pass 250ipm 12500rpm
for 1/4" tooling go to the 63-700 series for the pvc
Gary
If using a PRSAlpha that is well tuned up, you can use a good quality 2-flute 1/4" compression bit at 5-6IPS/14K RPM. I cut hundreds of sheets of plywood in to cabinet parts every year and always climb cut first, leaving a 1/32" skin, then conventional cut 1/32" thru the material. My first pass is done in 2 passes so as to not flex the machine too much. The purpose of the two-pass system is to help compensate for the flex in the machine. When I use this method the edges are really crisp and right on the money. I can go straight from the CNC to the edgebander. As far as plastic, I haven't done enough to really perfect the process yet.
Don
Diamond Lake Custom Woodworks, LLC
www.dlwoodworks.com
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May I ask, please, what is a "Climb Cut?"
Can that be explained?
We cut maple plywood everyday. Using a 1/4" straight cutter.
We drop down through the plywood 0.125" with each pass running at 60 ipm and 15k speed.
To get through 5/8" plywood, it takes 5 passes.
Thanks in advance.
Last edited by woodshop; 01-22-2019 at 07:00 AM. Reason: additional text
Our most important shop tool is the pencil sharpener!
How far are you going with your cabinet parts design?
Line boring for system screws for drawer hardware and also shelf pins is standard at 5mm. For that Centurion tools makes an excellent 5 mm compression bit that can do the whole job for you.
It takes a bit more cutting time for cutting your parts out than a larger bit would but you can process the whole job with no bit changes. or additional machining.