photoscan and repair hatch button

repair a citroen c3 pluriel hatch button with the help of photogrammetry and a CNC cut mold

sebsplane

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Details

Having a dated car and finding spare parts can be difficult, especially when such a simple element as a hatch button is molded in a meter-wide, monolithic and model-specific plastic part.
I couldn't hope to find this part in a scrapyard as they probably would have sold the whole rear window with it.
Having discovered photogrammetry with meshroom a couple of month ago, i decided to give it a try to replicate the shape of this part.

Files

boutonc3.nc

gcode c3 pluriel rear button 2mm drill bit

Network Common Data Form (NetCDF) - 205.91 kB - 12/14/2022 at 22:49

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Build Instructions

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1

Scan of the button

To begin, I took several picture (29) of my rear hatch button with my smartphone (moto g7 play) with the "manual" settings and imported them in meshroom.
I wasn't expecting much from such a featureless / glossy plastic but the results turned up to be really good.
2

Modelling the button in fusion 360

After a bit of mesh cleanup/alignment in Blender, I imported it in fusion 360 and started surface modelling . I tried to match the surface of the mesh as much as i could
3

Creating the mold

I did a boolean operation to create the negative shape of the mould