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Monday, 30 March 2026

Third Time Lucky? - Battledown Flyover #3

These five parts join together to make the bridge deck. It is nearly one metre long. Longer than the sides because the bridge is skewed. 

All but the smallest exhibit a small bow which can be manipulated straight due to the pliability of the resin. Once the sides are glued to the deck I expect the bows to be eliminated.

A couple of printing errors manifested. One was a delamination of print layers, simply due to insufficient support structures. The affected parts will not be reprinted as the fault is not too noticeable.

The other is a little odd. A rippling warp of a girder web. Odd because it only affected one girder on this part.

Earlier I said that in the design I had increased plate thickness to 0.5 mm. In fact I only did this to the sides of the bridge, not the deck because I could not be bothered and accepted the risk.

Fortunately this piece is hidden in the bridge embankment so can be left as is. Having seen this fault though the design of the centre pieces that are visible were increased in thickness before they were printed and they printed perfectly. This proves to my mind that 0.5mm plate thickness is acceptable when using this Anycubic water washable ABS like 3.0 resin.

To Part 1.


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