Edit 7/8/2019: On popular request, I added a version better suited for users that like to tighten the nozzle til it's flush with the block
I also migrated from Tinkercad over to Fusion 360, so I can make cleaner molds and edits.
This is a mold for making Silicone Sock insulators for the generic knockoff version of the E3D v6 J-Head heater blocks.
You'll need a high-temperature silicone to work with, either a two part mixture, or an RTV single part will work. I used this kind
- Latex gloves
- Disposable bowl/dish
- Dish Soap
- 2x M3 12mm screws
- Optional but very helpful: 1½" Ratcheting C-Clamp
Check out my other socks for other hotends:
This can be printed with larger layer heights, but the curves will be much rougher.
Also recommend 1.5-2mm wall thickness, and setting the extrusion width to the maximum of your nozzle
Supports only required on the Insert part.
Printing and Assembly
- Print using the above settings
1.2. Make sure any large zits or blemishes are scraped or sanded off
1.3. Make sure the sprue that goes through the bottom is clear, use a needle or 0.5mm drill to be sure air/water can escape through it
- Screw the handle into the insert, while making sure the cap is between them and properly aligned using the square cutouts on the top
Dunk the shell and top parts in soapy water (best if it's not very bubbly)
Fill the shell from the nozzle cavity up til there is about 3/4 of air gap left
- Make sure to keep the nozzle of your silicone tube in contact with the blob to avoid creating air bubbles
Line up the shell and cap assembly using the arrows printed on the outside
Press the cap and shell assembly together, allowing the excess silicone to escape through the sides and top
- Press only on the bottom of the shell and on the handle if possible.
- It's a good idea to to a test fit first to make sure the lip will not get stuck due to overextrusion or other printing defects. Removing the insert while the silicone is still gel can cause air pockets and will negatively effect the mold.
- Allow the silicone to set.
- Check the packaging on your silicone for setting times
- After setting, pull the cap assembly out of the shell. Angled flares on the shell are for easier grip. Sometimes this takes a decent amount of force.
- Unscrew and disassemble the insert from the cap and handle
- Using wire snips, cut off the leftover columns from the sprues and the cylinder at the tip of the nozzle area, along with any excess silicone that leaked through the cap sides and top
- Let the sock sit for a couple of hours to let any remaining liquid residue dry/evaporate