Build log 2014-04-17 : New wheelhouse test print
Small adjustments were made to the wheelhouse model after doors tested well on some test fixture.
Hinges were added to the wheelhouse. Small tabs were added to the inside of the front wall to support the bridge.
Updated wheelhouse model
With hinges; small tabs inside front wall
Print underway
Windows were printed "in the air"
A little ... fuzzy
Shouldn't have disabled retraction
After some deburring
Quick deburring with boxcutter. Sanding required.
Print settings were as follows:
- Material
- Ultimaker Blue PLA
- Layer height
- 0.1mm
- Shell
- 0.8mm
- Retraction
- No
- Bottom/Top thickness
- 1mm
- Fill density
- 100%
- Speed
- 30mm/s
- Bottom/Top Speed
- 20mm/s
- Support
- None
- Plateform adhesion
- Raft
All the "stringing" comes from the lack of "retraction" which I had disabled. Retraction is when the printer "sucks back in" a little bit of material when moving from one spot to another.
When the printing head was moving from one side of a window or door even if there was no "active extrusion" it was enough to get plastic strings (think taking a slice from a hot pizza with the hot cheese!).
Lesson learned although not a big deal. Once deburred and sanded there would be no visible after-effects.
Support was disabled and everything including the roof was printed "in the air". It proved challending for the roof obviously. The strings of plastic hanging from one edge to another ended up sagging a bit with additional layers barely touching giving the roof a mesh-like feel.
Things got better as the roof thickened (2.4mm in the 3D model). While it looks decent and doesn't flex that much under finger pressure the roof actually isn't opaque. Some light gets through when looking at a computer screen or light while side walls are really opaque. With primer and a few coats of paint it wouldn't be an issue.
Hinges worked great right away and the previously printed door sits flush with the wall when closed.
Now I need to find interior pics to model and print bridge equipment...