This is a holder for glass microelectrode with 1.5 mm OD and BNC connector, which is common in electrophysiology rigs.The published model has a vented design (the pressure in the microelectrode is atmospheric), one can convert it into pressurized desigh (used in patch-clamp) by installing a small piede of PEEK chromatograhy capillary into vent hole.
Parts list:
- 3D printed body and cap
- BNC connector with male plug and RG-58 threaded mount (like this one https://aliexpress.ru/item/1005005238150764.html?sku_id=12000032320199892&spm=a2g2w.productlist.search_results.11.787f4aa6JEeFNq)
- Silver wire 60mm long and 0.2-0.5 mm in diameter
- 1 cm of silicone tube with I.D. 1.0mm and O.D. 3.0mm
Assemly:
- Tap the threads in both body and cap. For resin prints depending on resin properties it might be better to tep the threads before post-curing.
- Solder the silver wire to BNC connector central pin.
- Place the pin into BNC connector.
- Put 2-3mm piece of silicone tube on the wire.
- Screw the holder body into BNC connector
- Put another 2-3 mm piece of silicone tube on the wire.
- Screw the holder cap on the holder body.