Sorry to bring a long dead article back but thinking about getting a stamp made for my coil. Is Staples the best place to have this made and if so, what type of stamp as they have several to choose from:
Most likely they will refuse do to copywrite concerns. Heard a number of stories lately of guys getting refused based on that concern by the stamp making companies
Also would be concerned if they would not redo/substitute your fonts for "stock" fonts
As for what type of stamp it depends on hoe you plan to install/apply it and how you plan to "ink" the stamp.
You can choose to roll the stamp on the part (in this case a coil) or roll the part on the stamp. Placed or attached stationary while you move the coil over the stamp.
Haven't measured my coil stamps in a long time but see the post with those measurements - have you checked if they make them that large? And if so that might limit your choices going through them.
There are companies that make signs and such that make stamps