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Cutting Cardboard - Drag Knifes

Re: Cutting Cardboard - Drag Knifes

Postby keith » Wed Apr 09, 2014 10:25 pm

who loves this forum?

I DO!!!!!

I eagerly await an update!!!!!
Last edited by keith on Thu Apr 10, 2014 6:22 am, edited 1 time in total.
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Re: Cutting Cardboard - Drag Knifes

Postby kevinl » Wed Apr 09, 2014 10:51 pm

i maybe put the cart before the horse, but i also wonder if there would need to be changes in the post processor, let say mainly to keep up the with direction of the knife to know which segment that could be cut next..

that must be calculated or keep up with, watching drag knife videos, you see the skips unless the knife is doing a g2 or g3 type code..

guess my question would be what also keeps up or generates the offset distance between the center of the router bit and the knife tip.. there should be an offset for the knife to track correctly..
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Re: Cutting Cardboard - Drag Knifes

Postby bajaru » Thu Apr 10, 2014 7:04 pm

Awesomeness, might you have a ballpark sales price in mind if you design, produce and ship these? Would it be worth your while at < $100? I could be your first customer/beta tester if you're looking for one.

I'm aiming to cut regular ol' corrugated cardboard. (1/2" shank preferred)

-Brian
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Re: Cutting Cardboard - Drag Knifes

Postby Awesomeness » Thu Apr 10, 2014 7:55 pm

I don't have a ballpark price in mind. Certain hope to beat $250 by quite a bit. The biggest price hurdle is that "quantity is king". If I just get a couple made, they will be expensive. So before I have an idea on price, I'll need to do the following...
1. Design something.
2. Take the drawings to a machine shop, and get their feedback on any cost improvements (e.g. "If you use a $1 pin here, instead of a machined protrusion, it will cut $10 off the machining cost because it requires one less position setup in the mill.") Typically, I'm pretty good at this.
3. Incorporate the changes.
4. Get a prototype, and test.
5. Get a few pre-orders to meet some quantity (e.g. 10).
6. Order.
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Re: Cutting Cardboard - Drag Knifes

Postby bajaru » Thu Apr 10, 2014 10:37 pm

Well, count me in and keep me posted.

This might make for a good Kickstarter project.
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Re: Cutting Cardboard - Drag Knifes

Postby larry104 » Sat Apr 12, 2014 10:32 pm

YES, count me in too!
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Re: Cutting Cardboard - Drag Knifes

Postby keith » Sun Apr 13, 2014 6:36 am

OK, for the record, as I started this topic I will say it too....

OBVIOUSLY I am interested! :D
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Re: Cutting Cardboard - Drag Knifes

Postby larry104 » Sun Jun 29, 2014 10:01 pm

@Awesomeness - any updates?
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Re: Cutting Cardboard - Drag Knifes

Postby Awesomeness » Mon Jun 30, 2014 1:53 am

Nothing yet. I haven't had any chance to mess with it yet. I'm going to be building a small CNC [metal] mill over the next month or two. That will probably be one of my first projects.
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Re: Cutting Cardboard - Drag Knifes

Postby Awesomeness » Sun Aug 24, 2014 10:32 pm

I've started to prototype this a little bit. This version has some serious flaws, but it got me headed in the right direction. I'll try to keep up more on it.

Plus, since I'm building a CNC metal mill right now, it will be a good project to test it out on.

PTW-22-1-AD-0174 (CNC Drag Knife Top Assembly).png
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