How Long Should This Take To Make?

[mrjofus1959]

Hello All - This is my first post and by way of introduction I have never worked with CNC machinery but I'm planning to build a CNC router for woodworking sometime down the road. At any rate I have a general question that I thought perhaps I could get some insight/answers to in this forum.

I've attached a quick and dirty drawing I did in Sketchup (first time using it by the way) of a shape I need to have machined. It's to be made from peek plastic with an overall thickness of 6mm, outside dimensions of 51mm sq, inside dimensions of 20mm sq, recess around the 4 "legs" of 1mm, an 4 3mm holes as shown.

So given a drawing like this with proper dimensions added to the drawing, about how long should it take for someone who's experienced with CAD/CAM software and their CNC mill to turn out something like this?

Thanks!

[holbieone]

Does you pocket need no corner radius or can there be a radius , you can not mill zero radius corners

[mrjofus1959]

Does you pocket need no corner radius or can there be a radius , you can not mill zero radius corners

Sorry about that - forgot to attempt to draw that in Sketchup. The pocket will be used to align a square device so the inside corners of the pocket need to be drilled out to allow a square corner. So something like the attached image.

[mrjofus1959]

Here's a revised shot showing the inside corner relief.

[txcncman]

The part represented, if only a quantity of 1, would never touch the CNC or the CAD/CAM. It would go straight to the manual mill and be completed in about an hour. If I took the time to program and set up something so simple for the CNC it would probably take 2-3 hours.

[mrjofus1959]

The part represented, if only a quantity of 1, would never touch the CNC or the CAD/CAM. It would go straight to the manual mill and be completed in about an hour. If I took the time to program and set up something so simple for the CNC it would probably take 2-3 hours.

Thanks txcncman. I failed to mention tolerances which are fairly tight I believe, but good to know a CNC setup is 2-3 hours.

[txcncman]

Ok. Give me an hour and a half then for taking an extra pass on each surface to hold +/-0.001.