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by freman
Wed Jan 15, 2020 9:22 pm
Forum: Path/CAM
Topic: debugging spiral paths
Replies: 0
Views: 49

debugging spiral paths

Hi, where is the problem with spiral paths ? This is the path option I would chose to use most of the time , if only it worked. Others have said it is known to be unreliable and as I have posted elsewhere it often leaves pillar of uncut material in the centre of some volume which it should have clea...
by freman
Mon Jan 13, 2020 8:28 am
Forum: Path/CAM
Topic: inappropriate cutting speed on ramps.
Replies: 11
Views: 248

Re: inappropriate cutting speed on ramps.

Helical paths are the obvious exception to existing tools not doing simultaneous x,y,z movement, are there others I'm missing. I think chip load is the key consideration here since feeds and speeds are the fundamental in the user specifying horizontal feed rates. Something which radically changes th...
by freman
Mon Jan 13, 2020 1:16 am
Forum: Path/CAM
Topic: inappropriate cutting speed on ramps.
Replies: 11
Views: 248

Re: inappropriate cutting speed on ramps.

thanks for the link, that took some reading ! It gives a better perspective on the varying problems of different materials. One of the problems here is that if you use vertical speed as linear F speed on a shallow ramp you mess up the intended chip load. As was pointed out this is often not a conser...
by freman
Sun Jan 12, 2020 6:02 pm
Forum: Path/CAM
Topic: is opToolDiameter a sensible default
Replies: 17
Views: 262

Re: is opToolDiameter a sensible default

OK , got it. I've set opToolDiameter / 4 , so that should cover my back if I forget again. I also saved some common tools, so that will save forever having to reconfigure the same thing. Nice feature.:)
by freman
Sun Jan 12, 2020 4:49 pm
Forum: Path/CAM
Topic: inappropriate cutting speed on ramps.
Replies: 11
Views: 248

Re: inappropriate cutting speed on ramps.

thanks wsk8 , I'll take a look later. A dressup script is fine if you really need to tune it but it really should do a better job out of the box IMO. I'd be interested to see where the earlier discussion of this went. I don't have a specific "need" at the moment, it was just something I noticed whic...
by freman
Sun Jan 12, 2020 3:22 pm
Forum: Path/CAM
Topic: is opToolDiameter a sensible default
Replies: 17
Views: 262

Re: is opToolDiameter a sensible default

Thanks Chris but what am I supposed to export. I tried setting a few values in stylesheet ( including tool diam / 4 ) but Path | Export Template is greyed out .
by freman
Sun Jan 12, 2020 3:09 pm
Forum: Path/CAM
Topic: inappropriate cutting speed on ramps.
Replies: 11
Views: 248

Re: inappropriate cutting speed on ramps.

Thanks, what was the conclusion, apparently it went nowhere.
by freman
Sun Jan 12, 2020 12:15 pm
Forum: Path/CAM
Topic: is opToolDiameter a sensible default
Replies: 17
Views: 262

Re: is opToolDiameter a sensible default

At bigger flycutters it will be still to much....
well 1% then.

The other alternative is to leave it empty and ensure the s/w traps it at the right level and produces a relevant error message.
by freman
Sun Jan 12, 2020 11:25 am
Forum: Path/CAM
Topic: is opToolDiameter a sensible default
Replies: 17
Views: 262

Re: is opToolDiameter a sensible default

I thought about asking to put them directly in the preferences, but for which material? So I think it is a good solution to have templates, e.g. for different materials and different mills. Yes, I like that approach. Where can I find how to create that, I don't find anything in the manual for "temp...
by freman
Sun Jan 12, 2020 11:17 am
Forum: Path/CAM
Topic: is opToolDiameter a sensible default
Replies: 17
Views: 262

Re: is opToolDiameter a sensible default

thanks herbk, we are not discussing default tool but the default stepdown depth of each pass for a user defined tool. While the user is ultimately responsible, there are times when things get forgotten or overlooked. This should not lead to tool breaking, dangerous outcomes. The default could be mad...

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