This is a working model. plans by JDW Draughting services NZ.

Thank you KBWBE, The A2+ constraint properties menu is now fully expanded making the lower three button accessible. However, I had to customise the Workbenches menu and add it manually as even unzipping directly into the V0.18 'Mod' folder and restarting FC the A2+ would not show in the menu even th...

OS: Windows 10 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.16110 (Git) Build type: Release Branch: (HEAD detached at upstream/releases/FreeCAD-0-18) Hash: f7dccfaa909e5b9da26bf50c4a22ccca9bb10c40 Python version: 3.6.6 Qt version: 5.6.2 Coin version: 4.0.0a OCC version: 7.3.0 L...

Not that I recall, As the object at first save was just a rectangular block with no other features, as I am only just becoming acquainted with V0.18 I saved probably more often than necessary, it was around the third save that the error occurred.

I seem to have overcome this issue, after looking through File Explorer I found numerous entries for the file in question which had a series of characters attached them, the subsequent re-saves of the file was unable to rename the file as a result of the extended filename which I believe as result o...

OS: Windows 10 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.16110 (Git) Build type: Release Branch: (HEAD detached at upstream/releases/FreeCAD-0-18) Hash: f7dccfaa909e5b9da26bf50c4a22ccca9bb10c40 Python version: 3.6.6 Qt version: 5.6.2 Coin version: 4.0.0a OCC version: 7.3.0 L...

Nicely Done.........

Apologies to Julius for mispronouncing and spelling his name.
In fact I have a passion for steam driven vehicles and machinery, and NO I am not living in the past, these engines have a character and strength of their own.

Does not have a 'Super heater' per se, so have posted the boiler assembly FYI, hope it helps.

Designed by Julian DeWaal, other images available........