3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: !functionalprint@kbin.social or !functionalprint@fedia.io
There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml
Rules
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No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
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Be respectful, especially when disagreeing. Everyone should feel welcome here.
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No porn (NSFW prints are acceptable but must be marked NSFW)
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No Ads / Spamming / Guerrilla Marketing
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Do not create links to reddit
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If you see an issue please flag it
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No guns
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No injury gore posts
If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is 
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I made flat head bolts out of pteg for solar panel mounted to my sailboat and while towing it to the lake they ripped out :( (and I lost the panel)
I made the bolt head like a flat washer so I could glue it to the boat then set the panel on it and secured it with a pteg nut.
What was the failure mode? Did the glue holding them down fail, did the nut rip off the stud, leaving a stud glued to the boat, something else?
Failures are never fun, but they can still be a great learning opportunity.
The pteg failed (sheered off near the "head" of the bolt/stud. The flat washer like heads were all still attached.
I had to replace the panel, and just went with SS screws right into the fiberglass. I also tape the leading edge during transport.
I'm guessing air got up under the front lip and just poof off it came. In my case these were fairly small which I'm sure didn't help my case.
Thanks for the follow up, as well as the photo!