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By User10960

September 11, 2026, 5:03 am

max. depth of cut for small diameters

I can adjust DOC and WOC in a certain range, but using very small tool diameters e.g. 0.5mm with 4mm length (12mm stickout due to the conical shape) in C18200 the numbers are incredibly small. E.g. a DOC of 0.5mm leads to 2% WOC, a DOC of just 0.1mm only to a WOC of 10%. I haven't practiced it yet, but it seems to be too pessimistic? 

If I enable the slotting checkbox, the DOC field remains editable and I would assume that the F&S changes according to the DOC, but it seems to reduce to a certain fixed amount and doesn't react on changes. Apparently this happens when the tool is considered overloaded. I think that it should issue a warning about tool overload or set the feed to 0 as an indicator instead of some random low number?

My material should be rather C18000, not C18200. Any chance to get parameters for that? I think it is even harder than C18200 and the DOC would drop to zero, so maybe (I hope) there is an error for small diameter calculations?

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Eldar Gerfanov (Admin)

September 11, 2026, 5:16 am
Updated by: Eldar Gerfanov (Admin)

Hello,

It's hard to follow what exact setup you are having.

Can you attach a screenshot so i don't have to guess?

You can just paste directly from the snippet tool into the text box here.

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ForumAutomation

September 12, 2026, 6:03 am

Reported items logged in a new tracking issue: swindex/HSMAdvisor#141. It covers three points from your post: (1) DOC/WOC results appearing overly pessimistic for very small tool diameters (0.5 mm tool in C18200/C18000), (2) the slotting checkbox leaving DOC editable while F&S stops reacting to DOC changes when the tool is flagged as overloaded — a tool-overload warning and/or zeroing the feed is under consideration there, and (3) the request for C18000 material parameters. The issue is open; updates will be posted in this thread as progress is made. The requested screenshot would still help with point (1) — please attach it here if you can.

Thank you.

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User10960

September 12, 2026, 8:11 am

Hi,

thanks for taking care!

I tried to make a few screenshots and exported an URL..I guess that is the best way to reconstruct the settings?

From DOC=0.5mm to 0.02mm the feed doesn't change at all and doesn't indicate that this setting is apparently considered invalid. For 0.01mm and smaller it calculates other feeds. 

<https://app.fswizard.com/?share=%5B0.5,12,0,0.5,2,4,30,90,1,1,1,%22UNC%22,%221/4-20%22,null,null,0,0.01,0.499999,null,null,null,47.1,0.002302,100,100,30000,1,1,0,0,190%5D>

If you disable the slotting checkbox and try moderate DOC, the WOC will be extremely small.

I didn't test if that's the reason, but the stickout is 12mm due to a long conical change to the 1/8" shaft, while the actual 0.5mm flute is only 4mm long.

FYI: I think your repo is not public and therefore I can't access the issue link in your message. The forum email contained another link to this thread which also returned a 404:
"This thread is located at:
https://zero-divide.net/forums_xml?article_id=5459"
From comparison, the link contains the title in the id:
https://zero-divide.net/forums?article_id=5459_max-depth-of-cut-for-small-diameters

best regards

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Eldar Gerfanov (Admin)

September 13, 2026, 4:58 am

Hi,

Thank you for the screenshots.

I will investigate if there is an issue and fix accordingly. 

Yes the coderepos are not public, but I insert the links anyway to make it easier for me to navigate back and forward between the private github and the public issues  here.

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