This image shows our
CNC molds for the bumper pieces complete with supports to
attach to the island. We resolved the issue with our initial Rhino drawings but copying them on a flat plane before attempting to import this to
Excalibur. Once the
Excalibur software demonstrated a
correct tool path we could set our work up on the
machine. The groves at the centre of the object show where the tool needs excess material to start off it's cutting path. A very thin excess strip runs around the middle of each ring where the tool
didn't cut all the way down so we later
removed this with a
scalpel. Each grove will be filled with fast cast resin and
laid out to set with a piece of acrylic
on top to keep dirt and air bubbles out and to keep the surface flat. Once these have set, each half of the cast will be glued together.
Today the old issue of fitting the styrene strips around the island
reemerged. As the gap between where the styrene ends and the pillar cuts through is fairly big I used more styrene and filler to try and cover this. Finally, a mix of fine filler, styrene, car body filler and spray
paint covers the cracks
adequately as we no longer have time to remake this piece again. If we do decide to re make it, then we would cut the styrene into the sections between each post before wrapping this round the
chemi wood and
gluing it to leave a much smaller gap. There would still be the issue of a small gap left though.
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