RCU Forums - View Single Post - Coverting Classic plans for templates for laser cutters or CNC wood cutters
Old 03-25-2011 | 11:10 AM
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zedad71
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From: Pullman, WA
Default RE: Coverting Classic plans for templates for laser cutters or CNC wood cutters

FIrst off, there is no ego involved, I deal with misconceptions and misinformation, at work ( where I do cad work) with other modelers on other forums, and with other "experts"
My goal is only to present accurate information with no misleading ideas.
I stand by the fact that there is no easy way to convert a raster document into a vector document and maintain the accuracy needed to take advantage of a lasers inherant accuracy WITHOUT tracing and redrawing the file in the vector enviroment.
THe most common thing that happens is that people tend to think that there is a magic button that changes the scan of the drawing into a parts drawing, it just aint so,, there are programs that will convert from raster to vector, I have one, but by the time you clean up the resulting drawing, most times it is faster to simply import the raster file,and then trace it taking advantage of the snap and various line commands to build back the accuracy. I am also a painter, and have people asking me about shortcuts in the painting process,or ways to save money by using less expensive thinners. I FIRMLY stand against shortcuts because they cause more problems than they solve,,
That said, There is no SIMPLE way , there are ways and with practice and diligence a person can learn them but simple? I dont think they are simple but then thats my perspective
If I were to lay out the exact process I use, step by step, it would be a book because it needs to cover all the variables and issues that one comes up against in this process.

in closing, its not my ego, its reality, implying that to do this in a simple manner is not reality, its time consuming, and requires practice and attention to detail. UNLESS you are willing to accept sub-standard results akin to building from an old die-crushed sterling kit or the like where every part required massaging to fit properly.
My impression is that these people want to learn how to do this, and in that, its best not to lead them to believe that its either fast or simple, it just isnt. BUT it is doable by virtually anyone with practice and time.
as to my cutters requirements,,
all lines are polylines, cut lines are cyan, letttering and etch information is yellow
All lines are offset .003" for cutting "kerf" allowance.
maintain a minimum of .125 distance from the edge of all blanks
as to nesting, it depends totally upon the thickness of the material being cut, 1/2" requires more clearance than does 1/16 so there is no real answer
he imports the drawing files into Corel draw to prep cutting files