Hi, I am the original designer of the replacement arm adapter for the Home Depot 12 foot Skeleton (Skelly) and Inferno props. The original adapters are prone to break so I created and offered the 3D design files for free for those with 3D printers. However, many of you expressed interest in buying them directly. Rather than continue to work through Facebook Messenger, I created this Etsy listing (my first :) ).

My username on Thingiverse is NellyGTI if you want to find the 3D files, which are still available of FREE. Please message me here or on Facebook with any questions.

The adapters are made up of 3 printed parts in PETG, a base plate and 2 clips. They are printed separately in specific orientations to provide the maximum strength possible. These will be shipped pre-assembled with 4 stainless steel screws.

NOTE on printed parts: 3D parts are never perfect. You can expect some discoloration or bump and bruises. However, I do my best to be sure they are strong and will do the job intended. If you have any questions or concerns, please contact me and I will do my best to fix the issue.

COLOR: Skelly adapters are printed in WHITE, Inferno adapters are printed in BLACK and/or BROWN.

VIDEO INSTRUCTIONS ON YOUTUBE (COPY AND PASTE INTO YOUR BROWSER): https://tinyurl.com/SkellyParts

INSTRUCTIONS: These are meant to match the screw pattern and position of your original connector.
1) Make note of the orientation of original connector you are removing.
- You may want to mark the position with a pencil/pen on the bone/arm itself.
2) Unscrew all of the screws holding the original connector.
- Making sure to go slow as to not strip the screw heads (they are very soft).
3) Remove the existing connector and place the replacement in it place, lining up the screw holes.
- If the screw holes don't line up, turn the connector 180 degrees. If not, you may have a wacky facing hand or head!!!
4) Screw back in the screws that were removed.
- Don't overtighten them as the plastic of the bone/arm is not very thick and it doesn't need to be super tight.
5) Re-attach your arm/head and enjoy!

TROUBLESHOOTING: 3D Parts aren't perfect. There can be slight differences in dimension from batch to batch. As well as our Skelly/Inferno friends. Not everyone is perfectly made. Here are some helpful tips.
- Connector too tight: If you can't twist on the arm/head, you can unscrew the replacement connector and loosen the 4 allen screw holding the tabs pieces.
- Connector too loose: If the arm/head doesn't appear to lock in place very well, you can unscrew the replacement connector and tighten the 4 allen screw holding the tabs pieces. If they are already as tight as possible (don't strip them by over tightening them!!!!) You can add some layers of layers of duct tape or other material to the main surface of the replacement part (the large circle piece where the 8 screw heads are visible) to build it up. This will cause the tabs to lock in better.
- Connector is broken: These parts aren't indestructible, in fact I'd rather they break instead of your 12 foot friend. Please send me a message with a picture and I will help get your 12 foot friend mended again.