hollandshielding is bullshit, they want your SSN for fucking small orders

whacked out paranoid but nice documentation on their website. The samples are of nice quality though, if you want to give them SSN later for the order!
Their quote people are not too bad to deal with but still, who asks for SSN. I thought I was doing business with DPRK.
Keep in mind you can make a really professional custom box by yourself, if you use solder or silver solder, careful layout/measurement, cutting, bending on flat jigs if you bend.
Keep in mind if you make a solder joint, you can use a file to make it smooth, sand it and polish it. If you braze like 95% of the strength is in the lap joint, so there are basically no penalties for filing/sanding the bevel flat. Then you can use different grits of paper and a polishing wheel with rogue to get it to a mirror finish if you want. Look at haris brand low temperature solder (different kinds for metal and aluminum) (I have used metal solder @ 450F with a hand soldering iron to do a steel box of significant gauge) and brazing if you have a torch (you won't do this with a iron), for a small box you can do it with one of those 1 liter oxy/mapp gas torches you can buy for 50$.
The key is to use strait edges and a sharp scribe while you mark and to cut carefully with a variety of good sheers. With a bit of work your home made thing can look better then the picture of the thing in your hand. ***The biggest misconception about brazing/soldering is that people think its like welding. You get basically no strength from the fillet. You don't need a fillet. You can remove the fillet* The fillet is ductile and weak compared to the lap joint. *** If you just have a fillet with no penetration you did it wrong and its weak (common problem with 'tig brazing' videos on youtube). For instance, the way they used to do tank barrel nesting, is to get the ENTIRE barrel heated to red with like 5 guys with torches, then add pure silver to one end until it shows up on the other end. It should put things into prospective.
For instance if you want a mirror finish on aluminum just get a orbital sander, go from 220-330(if you got it)-400-800-1000-1500-2000-polishing compound. If you get the velcro-type disks that attach to the sander, and you put the sander in a vice, you can do a small part to mirror in around 30 minutes or less. Autoparts has all you need. Should work fine for copper and stainless too. Look at youtube for 'mirror polishing aluminum' and mirror polishing stainless steel to see what you can get, I saved quite a bit of money on old outdoor furniture that I thought was completely fucked.
youtube.com/watch?v=GTJmlXSCD0A
youtube.com/watch?v=8Bu2fDKLUp0 (do this to make a sander you can use small parts on, just clamp it in a vise (but obviously use a orbital one). Hold the parts carefully in leather gloves. It will be lighting quick for that little thing you want to make.