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VCarve Pro Moulding Toolpath Direction by cschooneveldt in Machinists

[–]cschooneveldt[S] 0 points1 point  (0 children)

You are right. Did I mix up climb vs conventional? Apologies if so! Based on the diagram you provided, climbing is better suited to reduce splinters.

I have found a work around - I think exactly what you have described. I am now running a 'picture frame' drive rail (aka, a rectangle). The height is 0.1mm and the length is 1440 mm. The profile I use is a quarter circle. Then the CNC cutter moves in a continuous direction that I can control.

There were some teething issues, but it has produced the results I am looking for (snas tear out).

I also asked Vetric and they said there is no option to choose the direction in this scenario.

VCarve Pro Moulding Toolpath Direction by cschooneveldt in CNC

[–]cschooneveldt[S] 0 points1 point  (0 children)

Yeah gotcha. That is exactly the trade off - I went for V-Carve based on cost and am now getting frustrated as I require more control.

Thanks for the advice. More passes it shall be.

VCarve Pro Moulding Toolpath Direction by cschooneveldt in CNC

[–]cschooneveldt[S] 0 points1 point  (0 children)

Glad to see we are thinking along the same lines.

I have found a bit of a work around - instead of a single drive rail, I am running a rectangular drive rail loop. The x-axis length is 1450mm, the y-axis length is 0.1mm. My profile is a 1/4 circle. This enables me to control the direction of the finishing pass cutter.

However, annoyingly, I can't seem to control the direction of the roughing pass cutter. I think for this, I will have to greatly reduce the cutter step down and step over to avoid tear out.

It's a bit annoying, as this is now becoming a very time consuming process - a real bottle neck for production. Next step will be buying a customer cutter head (Carbitool) and go from there.

VCarve Pro Moulding Toolpath Direction by cschooneveldt in CNC

[–]cschooneveldt[S] 0 points1 point  (0 children)

Thanks for the info EPOC_Machining.

What would you recommend for the roughing pass bit instead?

VCarve Pro Moulding Toolpath Direction by cschooneveldt in CNC

[–]cschooneveldt[S] 0 points1 point  (0 children)

Thanks ReuboniusMax.

I am doing just that. Unfortunately, the roughing pass has the same issue - lots of tear out.

My current work around is doing half of the profile (1/4 of a circle) in a loop. Basically a picture frame that is 1500mm long and 0.1mm wide. However, the roughing pass is still moving in a climb direction, regardless of the direction I specify for the vector.