More speed Igor! 
The sfm is already 50% higher that it should be lol. Running mild steel was fine but ide reccomend max 1/8 tool @ 10k for ti and other hard metals.
We don’t have the power, especially on the X to push those kinds of loads. So there you go folks, 100% diameter adoc in Ti adaptive
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Using the calculator today, I did not see any recommendations on ramping. Should it be 2D, 3D or even 4D?
What machine, spindle, spindle speed, DOC, WOC, endmill, and feed rate?
@vince posted Here about Steel
in 0.250 lakeshorecarbide fireplug
80ipm, 10krpm
0.0008 maximal chip
0.250 adoc 0.010 rdoc
He has another thread for titanium here
8mm CP1
Lakeshore 250 Fireplug
Lakeshore 250 4 flute ball
Followed a 0.0008 chipload for 0.0625 roughing, then 0.002 chipload for ball finishing
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Which calculator? Mine shows 1D for Fusion Adaptive (like the original NYCCNC calculator). Kennametal’s application data shows what their endmills are capable of (much more than Shapeokos support). And, I really doubt that GWizard was used to develop that data! 
No it was @julien’s calculator I was commenting on. I think that a 1D ramp would be fairly steep, I’ve used something closer to 2D with success but I could hear the spindle making more noise during the operation, nothing bad but I wonder if I went to 1D… Is there a reason why I would want only 1D. The time difference is very small.
Ohhh - Sorry - I think I misinterpreted your question. You meant the length of the ramp, not the depth (as I had interpreted it) - right?
Yes, the length is missing since you don’t want to go too fast.
I tried to assume a worst case scenario (“1D” vertical plunge), since this is all CC offers as of today.
But for sure, when using a CAM tool that supports various types of ramping (linear or helical) there is no reasons that I see to not use them, our endmills will thank us and live a long happy life.
2D I guess you meant linear ramping, and 3D I guess you mean helical, I did not quite grasp what 4D would be here ? varying the plungrate during the helical plunge ?
15 posts were merged into an existing topic: Speeds, Feeds, Power, and Force (SFPF) Calculator History
Hi everyone,
I finally published a v2 of the e-book, following the comments I received on v1.
- very thorough proofreading by @WillAdams, thank you again!
- lots of small improvements based on @luc.onthego’s insights, thanks!
- I integrated @gmack’s great feeds and speeds worksheet (it may not be the very latest version though), including the nice wood hardness list that @Hooby collected.
The v2 is now online at the same URL as before : https://shapeokoenthusiasts.gitbook.io/shapeoko-cnc-a-to-z/
A zip file with the PDF version and support files (gmack’s worksheet and my simplified version) is available here
Another zip file with the ePUB version and support files is available here
As I continue my journey in CNC territory, I will be updating the chapters here and there, comments/suggestions are still very much welcome to make the future v3 better.
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Thank you for all your work @julien, I think that every Shapeoko owner should download a copy and keep it in close proximity as a reference.
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My latest worksheet is available here. I anticipate making another update to reflect the latest thinking on cutting speed (SFM) thresholds for HSM after I determine what they are. I’ll also change the link recommending climb milling from Sandvic’s to Dapra’s. Thanks for your efforts on the e-book and explaining how to use the worksheet!
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Nice work! This is gonna be a good read.
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@julien, as a newbie i really appreciate all of the hard work you have put into the workbook. It is well written and easy to follow.
cheers
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@Julien
Do you think that it would be helpful to add links to informative videos to help clarify some of the topics that you cover in the e-book? IMO, this would be a good choice for “Climb vs. Conventional” milling and maybe this one for “Feeds and Speeds” (with appropriate caveats)? Preferably the videos would be downloaded, provided with, and linked to the e-book.
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I considered doing that, and other people have suggested adding links to interesting resources, but I have refrained from doing that for the following reasons:
- I would like the e-book to be mostly a standalone thing, without the distraction of clicking on many links (if people are like me, 15 min later they are 5 levels removed from the original page, and got lost in some other rabbit hole)
- the offline PDF/paper version would be frustrating to read.
- the Wiki is already providing tens of interesting links on pretty much every single topic.
- maintenance would become an issue, and there is nothing I dislike more than a broken link
- and basically I trust people to google any topic they are interested in to dig deeper, once they have realized where the topic fits in the big picture.
So basically, I’d rather not.
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I totally understand! I believe that you’ve already done a great service for the community by going thru hundreds - thousands of posts here and elsewhere to extract the most relevant and useful information and present it in an understandable manner. IMO augmenting your e-book with downloaded/linked videos produced by subject area experts might also be beneficial. As you know there’s a lot of noise and misinformation “out there”!
I’ve been using “Free Instant Downloader for YouTube” from the Microsoft Store to download and save videos for future reference and get around potential broken link issues. 
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