Flat v bit preview query

i have a 90 deg v bit with a 1mm flat bottom which im setting up

picking this is right way in tools, it looks right

in preview the outside edges have a step down at base, is this correct or a problem

1: way of thinking being flat is clears bottom say like end mill giving cleaner base

2: does it need to step down like this to get the correct angle along outline of operation

3: even if you change max depth to 1 mm it still steps down

4: wall step in at a 6mm cut , i get flute length says 2.4mm , but if you preview the 90 deg v with a point which is 3mm length it has a smooth wall edge

because the is no tip and it is flat , my thinking is it needs to go 0.6mm to achieve the final outcome but shouldn’t effect the edge

or is it like a pocket operation and than a profile cut last

lastly if it is correct what is the depth of that step down in preview is it the 0.6mm missing from the point

flat v.mage (217.8 KB)

Taking a look at the file here (cute)

Looks like you have it .236 depth, .11811 Stepdown, so I would expect 2 passes as well. I see 3

This persists even when changing to .250 depth .125 stepdown.

It looks like the tool is doing a pass along center of the VCarve but not taking into account the flat bottom. Asking for more info internally

cheers Colin for taking look , could it have something to do with final depth on operation tab not syncing with limit max depth in tool operation window , i noted this in rc 3 also , contacted support about it, or does max limit over ride final depth? , it is only V carve where they dont sync , pocket and profile sync, haven’t tested other operations
just remembered there is another file i set up few weeks ago think in rc2 where it appeared to step past the final design line in preview and not looking right , ill see if i saved that file of just trashed it and send it to you

This is a pretty straightforward bug in the handling of flat-tipped V bits. I was using the wrong value to account for the shortening of the bit by the tip diameter.

With that bug fixed, your file looks like this:

Thanks for reporting it!

glad to help :slight_smile:

the final depth and and limit max depth not being same, is that a bug, or does max depth override final depth

daam ur pumping out the RCs quicker than I can dig deeper into them ,

im like a kid in a candy shop when a new RC pops up :rofl:

Many hands makes light(er) work!

Final Depth is “make this operation go this deep.” With a V-carve there is no “Final Depth” - We can’t know what it will be until we process the geometry.

Max Depth is a limit, not a guarantee it’ll get that far, so they’re different properties, and Max Depth is counted from the Start Depth, so if you start at 5mm deep, and have ‘Max Depth’ set to 5, it’ll max out at 10mm.

cool thanks for clarifying that