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Renault Zoe bonnet/hood bumper — zdjęcie 1
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Renault Zoe bonnet/hood bumper

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This is my version of the Renault's bonnet bumper. Original part number: 628408501R

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Informacje o modelu

Źródło
Printables
Kategoria
Automotive
Licencja
Creative Commons — Attribution — Noncommercial

Renault Zoe has four bonnet bumpers (looking from front of the car) - two at the front (part no: 628405505R), two more back and outside (part no: 628408501R):

We can say that the bumpers consist of two elements connected together via fragile mounts: a socket which is mounted in the car's hole via latches and the main pin with a rubber tip.
It is probably designed like this to control cracking when there is too much force to the tip.

DISCLAIMER:
WARNING: this model is not an original part and may be even stronger (depending on your fill percentage and material used), it is specifically not designed to crack as the original element under more force (however, it could be modified, or weak filament and/or print parameters could be used). Keep this in mind; you print and use it at your own risk!

Designing history and model descriptions:
I own used Zoe and one of this rear bumper was missing (only socket exists):

while the other was attached by two of three mounts; two front bumpers are intact.

1. First, I decided to design the pin, as the socket seemed fine. It worked OK, but there was a small issue when opening the bonnet - the rubber was sticking to the bonnet and sometimes pulled the pin out of the socket. Probably gluing it to the socket would resolve this issue.

2. Then, I designed the whole element integrated with the socket, so you can print it to have a full replacement, even if the socket is missing. It printed OK, but because I used ABS, the latches seemed too fragile and cracked even when removing supports. It keeps the original latch dimensions, but it seems it is not strong enough for ABS filament (or vertical printing). You may want to try a different filament, and you might find this model useful, so I am providing it.

3. Finally, I redesigned the previous model to have stronger latches and was satisfied with the result. After making slight strength adjustments in Orca's settings, this ABS print now latches perfectly fine in my Zoe!

How to print:
1. The pin model shouldn’t be a problem to print. I only disabled automatic supports and painted the inner horizontal flat surface for the rubber. Then, I set manual tree supports, which resulted in one single support at the center. Supports for the slots are not needed.

2. Full bumpers: I recommend to paint supports (green) like this:

This should result in the following tree supports:

When printing in ABS, I changed the following values (compared to the default settings):

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