## Test the design rules for your 3D printer(s)
author : seunghwan-ji
This is our 3D Printer machine DP200 from Sindoh.
Seunghwan modeled tolerance test to make it efficiently at once.
It contains overhang test on the left side to not interrupt other test if it fall down, height test with thin horn and rod, hole test with square and circle shape, difference size, wall test with 2mm thick wall shaped square and circle, difference size, bridging test with various length, curve test with waving hole and angle test from the bed.
After modeling done exported that file to .stl file, and open at 3DWOX sindoh’s slicer and put default value. When creating gcode, the alarm popped up about it may need support part. But It’s test about various challenges, so we ignored the message.
But there was problem. Printer automatically stopped printing after create raft twice. We don’t know the reason.
So I modified model, I cut the test model in two parts, left and right. I create gcode and printed it again. I used yellow filament and another sindoh machine. And after about 12hours, it came out fine.
For the overhang test, it seemed filament little settled down on 10 and 20 degree. But it can be printed without supporter. And over 20degree those are fine.
For the horn and rod height test, it seemed thickness of object mattered for the quality. Thick square and circle rods were fine, but square and circle horns were not that clean and those had kind of seams. These shape is very tricky for some other printers. But, it went up fairy well.
For the wall test, those have same thickness of wall but diameters and length of squares were different. If objects are bigger, nozzle moves long and flow can be better than smaller objects.
For the hole test, those are all fine regardless of size of the hole and shapes.
This is another part of tolerance test.
For the bridge test, they are fine but there is slightly sinked part at length 60.
For another horn test and curve test. those have smooth curve surface.
Here’s the hero shot of test and values
Sunghyun tried maximum size. Sindoh says maximum size as W:210mm / D:200mm / H:195mm. But It was impossible.
Sunghyun tested maximum size on 3D WOX program and it was W:200mm / D:193mm / H:185mm. This is the result.
Material - PLA
Bed fix form - raft
Layer height - 0.2mm
Wall thickness - 0.8mm
Top/bottom thickness - 0.8
Infill density - 15%
Nozzle temperature - 200℃
Bed temperature - 60℃
Filament diameter - 1.75mm
Flow - 100%
Print speed - 40mm/s
Travel speed - 180mm/s
Retraction speed - 30mm/s
Length - 6mm
Fan speed - 50%
Support - no generate