SlowCAD cargo cult help

Post here for help on using FreeCAD's graphical user interface (GUI).
Forum rules
and Helpful information
IMPORTANT: Please click here and read this first, before asking for help

Also, be nice to others! Read the FreeCAD code of conduct!
Post Reply
andremiv
Posts: 56
Joined: Thu Sep 02, 2021 10:45 am
Location: France

SlowCAD cargo cult help

Post by andremiv »

Hello,

I have been trying to do a variable pitch helix for some time to design a wood combustion chamber air preheater.

You told me to use Mario52 variable pitch generator which I used but it does not give enough control. (It doesnt allow variables angles on each coil) I kinda managed to do it after 3 hours but was not satsfied with result. So I generated points with C program, and then used Mario52 WIREXYZ macro to make a wire, and finally I transformed the wire into spline in Draft. But then impossible to do a loft, without no apparent reason. It tells me to check the report view but it's pointless because it is the report view that says so. the pyhton console doesnt content red elements. The help on the loft function or the split functions are written in a style to suggest the user to believe. Like freecad likes or do not likes certain things, as if it were not deterministic. I know from the freecad talents channels that I watch that people seems to be able to use it. It works for them, why for me do I have such a painful user experience ? FreeCAD does not work ! It's broken !

In this adventure, It seems that I can't split a wire in 2 with freecad, the split function in draft doesnt work.
I am using last freecad version with no root
https://ibb.co/Ch7RFSg
https://ibb.co/tm6jw6n



Andre Miville
A new era of point programmation has come !
chrisb
Veteran
Posts: 53933
Joined: Tue Mar 17, 2015 9:14 am

Re: SlowCAD cargo cult help

Post by chrisb »

andremiv wrote: Wed Oct 05, 2022 9:58 pm But then impossible to do a loft, without no apparent reason.
Try a sweep instead of a loft.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
freedman
Veteran
Posts: 3441
Joined: Thu Mar 22, 2018 3:02 am
Location: Washington State, USA

Re: SlowCAD cargo cult help

Post by freedman »

You might have a look at my piping macro:
https://forum.freecadweb.org/viewtopic. ... 44#p595044

It is very powerful and quick for making pipes. It won't do variable pitch automatically but you can do it manually. I will answer questions and try to help.
Post Reply