Over the past couple of weeks, we have been discussing the need for a test part which allows us to examine the performance of powders. We really wanted a part that was not to big (which allows for smaller powder test batches). The part is little bit of a Swiss Army knife of test parts (a little of this and a little of that). It tests the performance of text positive and negative, thin wall & post positive and negative, and triangles positive and negative (and all in a 10x10x30 mm part).
We present renderings to allow all sides of the test part to be displayed.
We present the results of two powders of different mesh/particle sizes. The top bars are printed in a fairly course powder we obtained from a recycled glass shop. The lower bars are printed in our current best preforming glass powder. The results are quit telling — powder size clearly matters!
Next, we will attempt to set some numerical scale for results in an attempt to score or quantify performance.