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cvoinescu
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Re: DW 660 and 30000 RPM issues

Post by cvoinescu » Mon Aug 25, 2014 4:01 pm

That's not very satisfying either.
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

Cam
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Post by Cam » Sat Sep 20, 2014 1:05 pm

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Last edited by Cam on Sat May 14, 2016 10:16 am, edited 1 time in total.

WillAdams
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Re: DW 660 and 30000 RPM issues

Post by WillAdams » Sat Sep 20, 2014 3:18 pm

The previous settings worked for one person --- that's good enough given the statement at the top of the Materials page:
The values below may be used in configuring milling operations when using a CAM program to generate G-code to make a cut, but unless your machine is essentially identical to the machine which they were used on, can be considered as only very general guidelines. All values should be verified and tested on a scrap of material first, then one should adjust to match desired chip size and surface finish and time required for completion.
I.C.'s machine is a quite upgraded SO1, even compared to an SO2.
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
Nomad 883 Pro #596 (bamboo)

Cam
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Post by Cam » Fri Sep 26, 2014 1:35 pm

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Last edited by Cam on Sat May 14, 2016 10:17 am, edited 1 time in total.

cvoinescu
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Re: DW 660 and 30000 RPM issues

Post by cvoinescu » Fri Sep 26, 2014 7:42 pm

That's not very good at all. To me, it looks like something is very loose on your machine -- check the belts, V-wheels, pulleys, spindle holder, and pretty much all screws. Also, make sure your part is held down firmly.
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

Cam
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Post by Cam » Sat Sep 27, 2014 9:04 am

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Last edited by Cam on Sat May 14, 2016 10:17 am, edited 1 time in total.

ThatOtherGuy435
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Re: DW 660 and 30000 RPM issues

Post by ThatOtherGuy435 » Sat Sep 27, 2014 11:41 am

Looking at the 'straight' edges of that cut, they really aren't. The last time I saw a cut that wavy was before Dual-Y motors were standard. In addition to making sure your belts and v-wheels are firmly attached, I'd also look for anything binding and preventing movement - wheels, motors, anything that moves should move, but only in the right directions.
ShapeOko1 #??? - 1000mm Dual-drive Y, Double X, S2 gantry motor plates, ACME Z-Axis.

Cam
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Post by Cam » Sat Sep 27, 2014 1:00 pm

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Last edited by Cam on Sat May 14, 2016 10:17 am, edited 1 time in total.

ThatOtherGuy435
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Re: DW 660 and 30000 RPM issues

Post by ThatOtherGuy435 » Sun Sep 28, 2014 12:05 pm

How firmly is the bit into the collet? I could see this being a problem with a bad bearing in the dw660 causing extreme runout...

You really only get wobbly lines with something wobbling, though, and if you've checked everything else, the spindle mount and bearings are about all I can think of.
ShapeOko1 #??? - 1000mm Dual-drive Y, Double X, S2 gantry motor plates, ACME Z-Axis.

pepik
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Re: A

Post by pepik » Sun Mar 19, 2017 5:38 am

Hmm, I came here to double-check the wiki, as the feeds and speeds entry refers to this thread, but I can't find these numbers here anywhere. It looks like maybe cam edited away all his comments? Is there anyway to see the original?
Relevant part of the wiki says:
DW660: single flute end mill, 30000 rpm, 300mm/min feed rate, 75mm/min plunge. Pass Depth 0.0625
I wanted to confirm that 0.0625mm pass depth, because it seems really small. I'm in the middle of milling some cast acrylic, and it is taking a loooong time. That said, it is turning out nicely, I just wanted to make sure I wasn't wasting time.

Thanks, in case anyone can help!
Shapeoko 2 #7266
DW660 spindle
Upgraded wasteboard
Drag Chains

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