I’ve bought a piece of kit that has a broken casing on the USB-C connector  – something like this (except I don’t have the casing):

The connector still works and has some electrical tape around it but I’d like to improve on this.  My go to is self-amalgamating tape which can form a fairly solid cover or maybe multiple layers of heat shrink.

It’s not going to be used a massive amount and isn’t really going to be moved around [like a phone charger might].

Any other suggestions?

Make a ‘bath’ with tape and fill it with epoxy.

Find someone with a 3D printer?

Cover it in Ploymorph.

It’s a plastic that becomes mouldable when you put it hot water and hardens when it cools down.

Or try some Sugru.

Sugru, ideal for these sort of repairs.

I’d probably go with some adhesive lined heat shrink (as I could easily borrow some from work).

How much is a new one?

Buy a new USB C cable?

I think I’d just go with:

A) tape it up with a bit of duct tape or insulation tape
B) buy a new cable

How much is a new one?

> £40 as it’s got a pcb on the other end!!

Tape it is!!

Oh and thanks for the suggestions of Ploymorph and Sugru.

Never heard of either (clearly) and they both look properly clever!!

Sugru is definitely what I’d use.

I’d pot it in some epoxy.
Stuff that becomes moldable when warm may not be great if there’s much current flowing.

It will be difficult to apply the Polymorph without the possibility of some water getting trapped inside ie on the electrical contacts. I would go with Sugru

Most docking stations in my old office look like that!

I’d avoid polymorph…can cause all kinds of problems

You want something to stop flexing between the cable and the connector, so tape wouldn’t be a long term fix. Ideally you need something that fills the gaps and supports the wires and the connector. Epoxy will flow around everything and do the job. You just need to make a temporary mould with tape to keep it in place while it cures.

I’d probably go with some adhesive lined heat shrink

+1 for heat shrink.