Disappointed by the news that the Trump administration was walking back the plan to put Harriet Tubman on the $20 bill, I created this stamp to convert Jacksons into Tubmans myself.
Though anti-counterfeiting laws prohibit the willful destruction of, and stamping of advertisements upon, paper money, pursuant to I.I.18 U.S.C. § 333 of the United States Code, stamped currency is fit for circulation so long as its denomination remains legible.
A full explanation of the legality of currency stamping can be found here:
Handle is 3D printed, stamp is laser engraved.
Included on Thingiverse are three versions of the stamp handle, and the necessary vector files for engraving the stamp itself.
Ink pads: https://www.amazon.com/gp/product/B0056ETF8I/ref=ox_sc_act_title_4?smid=ATVPDKIKX0DER&psc=1
Tethers (for stamping stations): https://www.mcmaster.com/30345t542
Pre-made stamps are available for purchase through Etsy:
How to use the stamp: https://vimeo.com/250692555
Manufacturing videos: https://vimeo.com/319394691
More information, context, and history at https://tubmanstamp.com/
Custom handles (handle only, rubber stamp not included) are available to order through Shapeways:
Classic handle - http://shpws.me/QKTB
Slim handle - http://shpws.me/QKTA
Minimalist handle - http://shpws.me/QKTC