Gridfinity 1x1 Sealing Flux Syringe Holder with optional extra tip holder

Holds an Amtech flux syringe (or any other syringe with ~19mm diameter) with the syringe tip attached and sealed.
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updated January 27, 2025

Description

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This 1x1 Gridfinity bin is designed to hold a flux syringe for quick access. Unlike other models I could find, it seals the bottom of the hole to prevent leaks and keeps the flux from drying out.

The bin comes in four variants based around two different syringe needle tip lengths and the presence of storage holes for extra needle tips.

No special considerations for printing are needed. I had good results with standard PLA, a 0.4mm nozzle and 0.2mm layer height. If you want to enable ironing, I recommend using a modifier volume to only enable it for the large flat surface on the top. Something like the following position and size work for the short variant:

I found that adding a bit of silicone or other rubbery material (that is not dissolved by the flux) to the bottom of the hole aids in reducing flux leakage. This can be a small chunk cut out from something else (I used an old silicone soldering mat) or a small amount of RTV silicone.

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Model origin

The author remixed this model.

Differences of the remix compared to the original

Used as a blank parametric base for designing the flux syringe holder.

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