This is a Remix of @Gaz. (https://www.prusaprinters.org/de/prints/32781-slice-engineering-copperhead-silicone-sock-mold/)

I reduced the mold from 100 to 96 percent. As a result, the silicone sock lifts better on the heater block even when it gets hot. In addition, I removed the cuts at the hotend. Now you can make the cut with a knife/cutter yourself, where the cables of the heating cartridge and the thermistor come out and leave the other side completely. As a result, the sock has a better fit and can not simply detach.

I offer this silicone socks now on Etsy:

https://www.etsy.com/de/listing/1066313674/slice-engineering-copperhead-silicone