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  #11  
Old 03-06-2011, 07:43 AM
Kevin Case Kevin Case is offline
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Join Date: Jan 2011
Location: Charles City, Virginia
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Cool Rule #11

Always have ZEN like paitence when waiting for you CNC machine to arive after the pain of writting the check even if it is 8+ weeks.
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  #12  
Old 03-06-2011, 08:26 AM
Gripus Gripus is offline
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Default Rule # 12

Always make sure your collet is tightened properly. If it isn't your project gets thinner and thinner and thinner the longer you let it run.

Joe
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  #13  
Old 03-06-2011, 10:55 AM
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Mick Martin Mick Martin is offline
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Default

NEVER leave the collet wrench attached to the collet then turn on your router/spindle.

Always check the built-in collet lock is loose before starting the router
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  #14  
Old 03-06-2011, 04:46 PM
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james mcgrew james mcgrew is offline
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never try doing a touch pad with the spindle running (old bill hog)
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  #15  
Old 03-06-2011, 05:50 PM
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JohnnyCNC JohnnyCNC is offline
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Home your machine. Z can be very unforgiving!! One G53 Z0 without homing and the tool can be buried in the table before you can stop it.

Leave the machine for some reason? Home it again. Better safe than sorry.
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  #16  
Old 03-06-2011, 06:02 PM
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james mcgrew james mcgrew is offline
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one of the beautys of wincnc is the home positions under settings, this is a great feature use it!!
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  #17  
Old 03-07-2011, 08:30 AM
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JohnnyCNC JohnnyCNC is offline
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Default Index pins

Add a few 1/4" holes drilled 1/2 to 3/4ths of the way through your spoilboard. When I need to cut something on both sides, I can add a pin in a couple of locations. It allows me to do both sides and be confident that I will keep my location precisely.

If I were doing it on a vacuum table, I'd try to locate the holes over a high point on a grid.

Not indexing? Remove the pins.

I can also see where a stratically placed pin could help a lot on a part that might be prone to shift.
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  #18  
Old 03-11-2011, 06:54 PM
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JohnnyCNC JohnnyCNC is offline
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Default Snap collets into cover nuts.

Always, always make sure your collets are snapped into the cover nut when you change a bit/tool.

When you tighten the nut it forces the collet to wedge very tightly into the router/spindle shaft or tool holder. That is what keeps your tool from coming out while running at high speed.

When you loosen the cover nut:

If the collet is snapped in, the nut will loosen, then tighten back up. When you loosen it this time it pulls the collet out of the router/spindle shaft or tool holder, thus releasing the tool.

If the collet is not snapped in, the nut will loosen and will screw all the way off. But the collet will be wedged into the router/spindle shaft or tool holder. The tool is still as tight as when the nut was tight. You might be able to tap it out with a hammer or with a chisel. More than likely you'll have damaged your collet and need to replace it.

Not snapping the collet into the cover nut can be dangerous and expensive. I ruined a collet once and thought I had ruined a tool holder.

I mentioned this in another thread, but I thought it should be listed as a RULE.

JohnnyCNC
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  #19  
Old 05-08-2013, 03:15 PM
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Joey Jarrard Joey Jarrard is offline
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Bump ! Bump !!

I have a new one

Never reach under the dust boot when you have the donek knife in the spindle.
It is not round and compact like a bit and it will bite you. TRUST ME!!!!
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  #20  
Old 05-08-2013, 08:31 PM
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Gary Campbell Gary Campbell is offline
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I have one that "a friend" did. When toolpathing to surface a 4' by 6' by 2" customer supplied sign blank, make sure that you put the decimal point in the depth. .1 turns into 1 inch IMMEDIATELY.

And, a 2 1/2" surfacer bit will cut 1" deep for over a foot before I, I mean he, could hit the eStop.
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