CamBam is trying to kill my Shapeoko

pmodiano
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Re: CamBam is trying to kill my Shapeoko

Post by pmodiano » Wed Jul 10, 2013 9:33 pm

Will Winder wrote:What spindle are you using? My dremel would sometimes let the endmill slip a little. It looks like you have one of those drywall router bits which might exacerbate slippage if this is the same problem I had.
Forgive the newbie question but what router bit should I use if not a drywall router bit (that the DW660 uses)? Or was your issue just with the Dremel?
Shapeoko #1075 1000mm y axis, 500mm X axis, Dual Y motors, ACME screw Z axis upgrade, DW660. http://machinesonthemind.blogspot.com/

zerblatt007
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Re: CamBam is trying to kill my Shapeoko

Post by zerblatt007 » Wed Jul 10, 2013 10:00 pm

pmodiano wrote:Forgive the newbie question but what router bit should I use if not a drywall router bit (that the DW660 uses)? Or was your issue just with the Dremel?
I do not know much about drywall bits, but endmills seem to be the bit ShapeOko users usually use: http://buildyourcnc.com/endmills.aspx
Drywall bits seems to (after googling it) to be used for cutting drywall holes in one go, not milling like we want..
Shapeoko #958: Dual-Y drive, Double-X, Belt on outside, 1m Y-Axis, Acme Z, Opened up and boxed in. Kress 1050 Spindle.

Improbable Construct
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Re: CamBam is trying to kill my Shapeoko

Post by Improbable Construct » Wed Jul 10, 2013 10:18 pm

pmodiano wrote: Forgive the newbie question but what router bit should I use if not a drywall router bit (that the DW660 uses)?
I use these:
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 0674616259
I use them for most things these days.
Plywood, UHMW, HDPE, Acrylic, MDF, Maple, etc.

They are cheap and hold up pretty well.
The ebay seller "drillman1" has quite a few endmills for sale.
Just be careful and read the descriptions. Some of the endmills he sells are downcutting or left hand twist.
He also ships fast.
Shapeoko #Classified some of the bolts may be original parts.
Shapeoko 1 # ???? Stainless plates, still in the box.
Shapeoko 2 # 3926 not stock
Shapeoko 3 # 0003
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bjbsquared
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Re: CamBam is trying to kill my Shapeoko

Post by bjbsquared » Thu Jul 11, 2013 10:59 am

I really like these from drillman1:
0.125 2 flute with "horns"
#1016 - 1M x 1M Y: Dual Motor Drive w/Looped Belts, X:Dual Rail with wlanfox blocks, Z: Stock, Spindle:DW660

pmodiano
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Joined: Mon May 06, 2013 11:09 pm

Re: CamBam is trying to kill my Shapeoko

Post by pmodiano » Thu Jul 11, 2013 11:53 am

Excellent! Thank you. My end mills are on order.
Shapeoko #1075 1000mm y axis, 500mm X axis, Dual Y motors, ACME screw Z axis upgrade, DW660. http://machinesonthemind.blogspot.com/

deejayspinz
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Location: Burlington Ontario, Canada

Re: CamBam is trying to kill my Shapeoko

Post by deejayspinz » Thu Jul 11, 2013 12:41 pm

I've had good luck with this end mill. Mostly doing plastics / HDPE etc. I also bought a few 1.5mm versions of this as well. Haven't tried them on metal or wood yet.

pmodiano
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Joined: Mon May 06, 2013 11:09 pm

Re: CamBam is trying to kill my Shapeoko

Post by pmodiano » Mon Jul 15, 2013 1:08 pm

Thank you all for your advice. I have had a few successful jobs using CamBam-generated gcode with grbl 8c thanks to the sage advice from Tom Smith and cvoinescu. It turns out that if I let the default gcode output do its thing, my Z axis tends to go nuts at some point during the job. But if I do a search and replace, changing "G0 Z" to "G1 F12 Z", then all works perfectly, even in long multi-hour jobs.
Shapeoko #1075 1000mm y axis, 500mm X axis, Dual Y motors, ACME screw Z axis upgrade, DW660. http://machinesonthemind.blogspot.com/

zerblatt007
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Re: CamBam is trying to kill my Shapeoko

Post by zerblatt007 » Mon Jul 15, 2013 1:43 pm

bjbsquared wrote:I really like these from drillman1:
0.125 2 flute with "horns"
Why do you prefer these with "horns" to a normal endmill?

I have V, endmill and ball shaped so far.. :)
Shapeoko #958: Dual-Y drive, Double-X, Belt on outside, 1m Y-Axis, Acme Z, Opened up and boxed in. Kress 1050 Spindle.

bjbsquared
Posts: 102
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Re: CamBam is trying to kill my Shapeoko

Post by bjbsquared » Sun Jul 21, 2013 6:40 am

zerblatt007 wrote:
bjbsquared wrote:I really like these from drillman1:
0.125 2 flute with "horns"
Why do you prefer these with "horns" to a normal endmill?

I have V, endmill and ball shaped so far.. :)
It cuts waaaay better than the bit that comes with the machine.

It seems to be really good at plunging. Also the surface fuzz seems to be reduced at the cutting edge. I think this depends on the depth of the first cut though.

Different shapes have different strengths and abilities. This one seems to be good for 2.5D.
#1016 - 1M x 1M Y: Dual Motor Drive w/Looped Belts, X:Dual Rail with wlanfox blocks, Z: Stock, Spindle:DW660

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