New Drag Knife

[joe]

Cosmos,

What you've tested is Anchor's lightest resist. SB resists come in lots of thicknesses supported by different adhesives. Blasting on glass isn't nearly as demanding as stone or wood. Wood is much tougher than stone. What you cut was the lightest. It's made for hand cutting. If you check Anchor's list of products I think you'll see lots of options. I think they offer about thirty different types.

Another excellent resist is Hartco. It's a little tougher material to cut but stands up to blasting much better. It's a heart break to go to all the work for blasting and have it fail. That's the norm when getting into this business.

I'm sure your knife will cut mask of this type but it may take several passes. I like lots of passes since it guarantee's a complete cut.

http://www.hartcoservice.com/sandmask

[Cosmos275]

Joe, when you used that stuff, how did you hold it down when cutting? Vacuum table?

[joe]

No hold down necessary. The mask is installed directly on the wood. That's where all the cutting and routing takes place. For years I cut the mask on a plotter then transferred it. What a waste of time. O, I may have forgot to mention we cut the mask with a bradpoint router bit. The depth of cut is only .125.

[Cosmos275]

Oh right.. it's on the wood.

[Cosmos275]

The Drag Knife is back. It was discontinued for a couple years do to a shop move and some other things. It's back in 7075 and gray ano. 3 different offsets available.

Thanks!

IMG_0902.JPG

https://cosmos-industrial.com/index....=index&cPath=4

[Cosmos275]

Got a new one out:

Adjustable Offset Drag Knife



Adjustable Offset: 2-12mm (~1/16 - 1/2”)
Blades: Any standard sized utility blade. This lets you use HSS, Tin coated or Carbide edged blades.
Set screw is used to recall offset position between blade changes.
Body: Gray anodized 7075 Aluminum (high strength). 62.3mm long (not including blade stick out)
Bearings: Dual 7/8” diameter ball bearings offer best balance between radial load capacity and minimal overall length
Shank: Hardened steel 3/8”. 36.2mm length.
Clamp: 303 stainless steel. M5 bolt



Made in Fort Worth, TX
Days to ship: 1-2 (usually same day)

[khaos]

Love the simplicity of the design.

[Mike Windsor]

Have you tried cutting 3mm coreplast ? ---I cut a lot of that for a local sign shop with a 1/8" spiral end mill. the chips are very clingy and the dust collection is never 100 percent effective . I'd love to do it with a drag knife , but wonder what would happen when it went against the ribs at an angle in the coreplast ?

[Cosmos275]

I have some on hand but might be thicker. I will try to fit in a test this week. I'd think you could dig in extra to the spoilboard to keep it straight.

[Mike Windsor]

It might be 4 mm that I cut
I'd definitely be interested in the drag knife if it could cut it