I don't know about what cura does internally so I can't help there. But you got me curious. You're trying to compensate by 0.3%? That is a tiiiny amount. What are you printing that needs such high tolerance?
I noticed this too. The number still works, it's just not displayed. Actually what I would like to see is a profile setting that stores the scaling. This way different materials (profiles) can have a default scaling for shrinkage.
0.3% doesn't seem to me like such a small number; my printer is better than 0.5% accuracy once I adjust for shrinkage. And often I make press fit parts that go with other non-printed objects.
@ rpress: Recognized that too, earlier today. The Numbers disappear but the scaling is still applied 
Profile for that setting is a really good idea!
@ IRobertl: Its really not that much (~ 0,5mm for 100mm). I printed a prototype and that thing didn't fit to the other part. Then I thought the printer is off and looked for calibration. After that I learned about the shrinkage of printed stuff Now I know what I have to keep in mind for designing stuff, but still its no work to apply the scale and get near 100% prints.
I've changed the number of decimals to 3 for the next version.
super cool, you're the hero of the month
super cool, you're the hero of the month
Every month for the past 3 years 
showoff!
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UltiMaker Cura 5.3 stable released
ArunC posted a topic in Ultimaker Cura,
In this stable release, Cura 5.3 achieves yet another huge leap forward in 3D printing thanks to material interlocking! As well as introducing an expanded recommended print settings menu and lots of print quality improvements. Not to mention, a whole bunch of new printer profiles for non-UltiMaker printers!-
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Here it is. The new UltiMaker S7
MariMakes posted a topic in Official news,
The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
So what’s new?
The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.
The UltiMaker S7 also includes quality of life improvements:
Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more
Curious to see the S7 in action?
We’re hosting a free tech demo on February 7.
It will be live and you can ask any questions to our CTO, Miguel Calvo.
Register here for the Webinar-
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Cura Alpha With New Tree Support 🎄
MariMakes posted a topic in Ultimaker Cura,
Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.-
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donmilne 2
Without looking at the Cura code...
Almost all software will show numbers to some fixed precision - say 3 or 4 decimal places max. With a floating point representation there's no easy way to know which of the imprecisely stored digits constitute the correct level of rounding in your thinking. It also can't store to an abitrary precision.
The memory of the number of digits you entered is lost as soon as the number is converted to floating point. The only way it could satisfy your expectations would be to store reals as strings or very big scaled integers.
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