So 3doodler are promising jam free 3d printing pens that work with more materials.
I have thought of buying a 3d pen in the past for finishing off prints but never pulled the trigger on one.
Also the 3doodler pens always seem very expensive to me.
The Create+ builds on the original Create with what the company says is the first dual drive system in any 3D printer, promising "almost entirely jam-free" drawing -- the days of a panicked halt in mid-project should be gone. This also helps it work smoothly with a greater range of plastics, including ABS, FLEXY and PLA.
3Doodler's latest pen promises jam-free 3D printing (https://www.engadget.com/2018/06/05/3doodler-create-plus-pen/?guccounter=1)
https://youtu.be/khSOcVup4is