/diy/ - Do It Yourself

>>2808955
nta, but it would have to be incredibly specific things that you sell on ebay/etsy whatever to the general population as it pertains to a common nuisance/issue with the specified product.
My general rule of thumb, is if I have a current and semi popular product and I fix a nuisance/make an improvement for my personal use, printing the part in a fancy material and putting it up on ebay can net a sale or two.
For example, I used to sell mounting brackets out of asa/polycarb/pctg that would attach to the passenger grab bars of my motorcycles to where the end user could easily attach a cheap top case from harbor freight. It enabled the use of existing geometry on the motorcycle(passenger grab bars) to mount an apache top case. Total cost of around $50 for a really good top case that sits in the passenger seat and is properly water proof.
$15 each set, would cost me a total of like $5+20 minutes of actual time, and I discontinued it after I went nearly a month without any sales. Sold almost 300 of them over three different motorcycle models.
Did it overall pay for the tools I ended up using? not really. Even at that quantity I think just designing the mounts took a ridiculous amount of time that didn't quite pay off.
I still think I might go about doing it again when I get the 3d scanning technique down and can just scan multiple bikes quickly for reference geometry.