Darn, I did not mean to offend anyone, not trying to rip anyone off either.
There is a fair amount of work involved in making these, and if you have done it you know this. It's not just a pipe cap cut in half. It needs to be sectioned, holes cut for fill and drain, and then smoothed out with a grinder. It is not a secret recipe, but it is time consuming.
My apologies if someone else is allready making something similar, but I have not seen it.
You're right, I'm not a business, just a guy hacking these out in his garage. I did not see anything indicating trying to sell a few caps was against the rules. I will delete this immediately if it is.
PMK