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  #11  
Old 03-04-2016, 08:38 AM
rcrawford rcrawford is offline
Cobra Owner
 
Join Date: Dec 2011
Location: Alberta
Posts: 2,182
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Do you ship to Canada? And if so, what courier do you use? (I think USPS probably has the least amount of service charges on my end for crossing the border).

I'm definitely interested in ordering one. About time I got a pen holder as well.
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Russell Crawford
Cobra 408 ATC with recoil
Alberta, Canada
www.cherryleaf-rustle.com
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  #12  
Old 03-04-2016, 09:18 AM
CosmosK CosmosK is offline
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Join Date: Jul 2014
Location: Fort Worth
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Yes, I'll ship about anywhere. The website will add a couple bucks for Canada. I ship priority in the US (better than UPS ground now that they have tracking) and standard post internationally, which also has a tracking number.
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2014 Stinger II (SR-44)
1.7 kW Spindle w/ speed control, Performance kit, VCarve Pro
www.cosmos-industrial.com
>Pen Marking Tools
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  #13  
Old 03-04-2016, 10:18 AM
de5 de5 is offline
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Join Date: Jan 2011
Location: Honea Path, SC
Posts: 912
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Cosmos, I keep looking at that tool and it's so pretty that I want one even though I have no use for it. I'm going to resist for now, but it's HARD. You have really created an excellent looking tool.
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Charlie Hind
Cobra 404 ATC with 12 tool positions & 4th Axis (2012-present)
(2006-2012 - K2 CNC... sold in 2012 to buy the Cobra)
WinCNC
www.hindocarina.com
http://facebook.com/hindocarina
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  #14  
Old 03-04-2016, 10:29 AM
CosmosK CosmosK is offline
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Join Date: Jul 2014
Location: Fort Worth
Posts: 798
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Thanks, yeah the photo shoot went well!
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2014 Stinger II (SR-44)
1.7 kW Spindle w/ speed control, Performance kit, VCarve Pro
www.cosmos-industrial.com
>Pen Marking Tools
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  #15  
Old 03-18-2016, 08:20 AM
Bob Walters Bob Walters is offline
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Join Date: Oct 2015
Location: Lebanon, Ohio
Posts: 520
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Just bought one. Looks like exactly what I need.
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Bob Walters
Lebanon, Ohio

2016 Stinger II SR-44
Fast Tool Change
Laser Cross Hair
3.0 kW Spindle
1200 oz Digital Stepper Drive System
Remote Handheld Keypad
Vectric VCarve Pro 9.0

www.cool-signs.com
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  #16  
Old 04-03-2016, 12:08 PM
CosmosK CosmosK is offline
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Join Date: Jul 2014
Location: Fort Worth
Posts: 798
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Here are some notes on programming the drag knife and some test photos

I was sent an image of a letter by a customer (Bob) trying to get the drag knife going on small letters in thin vinyl. There had been some discussion of bearing drag, but I think the speed has more to do it at this point. The letter “E” was cut at 75IPM

I test cut a couple letters of the same size on a piece of paper (didn’t have any thin vinyl on hand).

You can see the letters “A” and “T” in the other two pictures. They came out pretty good for a 3mm offset tool. I do plan to come out with a 1.5mm offset tool soon (geared towards smaller work).

Programming notes:
The speed I ran was 12 IPM (1/6th the speed of the bad quality letter)
Cut depth was .13mm (.0051”)
Pivot depth was .12mm (.0047”)

I did some manual edits of the G code to remove the first pivot and the last pivot generated by Vectric’s Drag Knife Gadget. I noted the initial blade direction and set that manually before starting. With that, removing the first and last pivot eliminated some small damage the pivots do at the start and end.

So I think the main takeaway is for small details like letters, you must go slow. This allows the device time to pivot. Freeing up the bearing may help, but still, slower will give better results (if you already bought one, talk to me about making the bearings spin more free. New units will ship with this modification). The other takeaway is the Drag Knife Gadget in Vcarve is a good start, but isn’t perfect. It can be cleaned up doing some manual G code edits.

Attached Images
File Type: jpg AT.jpg (95.3 KB, 20 views)
File Type: jpg 75 ipm.jpg (60.1 KB, 31 views)
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2014 Stinger II (SR-44)
1.7 kW Spindle w/ speed control, Performance kit, VCarve Pro
www.cosmos-industrial.com
>Pen Marking Tools
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  #17  
Old 04-03-2016, 02:03 PM
bobcef bobcef is offline
CAMaster Owner
 
Join Date: Jan 2013
Location: New York
Posts: 187
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Cosmos what if I wanted to cut deeper like 1/8" to 1/4" corrugated, cardboard like box material ? Could that blade extend out further?
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Bob Cefalu

Cobra CR-404
Cutting Size (X,Y,Z) 49” X 49” X 8”
ATC - 10HP Fuji Vacuum Pump

http://rctonewoods.com/RCT_Store
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  #18  
Old 04-03-2016, 02:07 PM
CosmosK CosmosK is offline
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Join Date: Jul 2014
Location: Fort Worth
Posts: 798
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Yes, just clamp it down out a little farther. The offset can also be tweaked a little too as there is some wiggle (not much).
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2014 Stinger II (SR-44)
1.7 kW Spindle w/ speed control, Performance kit, VCarve Pro
www.cosmos-industrial.com
>Pen Marking Tools
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  #19  
Old 04-03-2016, 03:56 PM
bobcef bobcef is offline
CAMaster Owner
 
Join Date: Jan 2013
Location: New York
Posts: 187
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OK Thank You
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Bob Cefalu

Cobra CR-404
Cutting Size (X,Y,Z) 49” X 49” X 8”
ATC - 10HP Fuji Vacuum Pump

http://rctonewoods.com/RCT_Store
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  #20  
Old 04-03-2016, 08:23 PM
Bob Walters Bob Walters is offline
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Join Date: Oct 2015
Location: Lebanon, Ohio
Posts: 520
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Thanks again Cosmos for helping me out. It is a beautiful tool. It is really weird to watch it doing its thing with zero spindle noise.
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Bob Walters
Lebanon, Ohio

2016 Stinger II SR-44
Fast Tool Change
Laser Cross Hair
3.0 kW Spindle
1200 oz Digital Stepper Drive System
Remote Handheld Keypad
Vectric VCarve Pro 9.0

www.cool-signs.com
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