We have the capability for etched tubes using vinyl plotter and sandblasting but we currently just dont have time. There is a laundry list of things we are adding as we can get to them and this is one of them for sure.
MNguy, looks good on the Vamo. I have one on the ZMax Mini right now and it looks good there too. The Mini is 21mm diameter so it is very slightly larger and I will probably swap out a 19 for this
device but it not too bad at all.
On other things, not sure if I mentioned it already or not but we have sent the White silicone material we sourced to our cutting
shop to be made into washers for all three of our
tank sizes. I also got notice today that the Blue has been shipped our way so when it gets in that too will be forwarded for cutting. Should be in the next couple of weeks when we start getting these in.
Lastly word from our machine shop is that they now have three machine running our products

The Drip Tips should be ready to go to Anodizing some time next week and production numbers of all of our other caps will be much more readily available for us. I think the next big move with them will be 19mm Anodized caps.