Markforged Mark One, Two, and Onyx Gen 1 Extruder Upgrade to Geared Drive

Upgraded the Gen 1 extruder to use the Bondtech Drive Gear kit. Now the Gen1 extruder will push filament with less skipping/under-extrusion.

Additional Items required:

1 x Bondtech 2.85mm(3.0)/8mm Shaft Drive Gear Kit for the main gear

1 x Bondtech 1.75mm/5mm Shaft Drive Gear Kit for the top gear

1 x 5mm to 8mm motor shaft adapter.

https://www.bondtech.se/product/drivegear-kits/?srsltid=AfmBOor30bwiyJacsotoZJpAzIHd2r8uzfw-SAUoDy53VrhlwiHK6E6V

Matterhackers and Filastruder have these if you are in the US.

https://www.amazon.com/Fraizoe-RC-Adapter-Stainless-Compatible/dp/B0FZTG923J/ref=sr_1_3?crid=11V38IVJNTDG2&dib=eyJ2IjoiMSJ9.rxFeRGv18jP4PtF1IgoLgW8gcah9zhBZ7q1s2UdXBVqU-Q53re7TVdk6RGp8gJBnBs3B-JFkj9IeK2TgO7a36_BYYseLzrG1rR6pEZyHHxSdr1VDrTvuAWDFbGeLI8mAcxCHs2-GTrziU8h1XFzK8QCx0GC29fRLXmkq1yesKKPFI155mCGLNVUwbhg2tpCQHURPx2x3nDZH_ROuEXdwnk-sEI61UYLEbTdsQmo9mWE.ZxLVhNkh_-5ydMxWlA0sn7LDtotYPeDkpt9tFDMgmqs&dib_tag=se&keywords=5mm+to+8mm+shaft+adapter&qid=1782015459&sprefix=5mm+to+8mm%2Caps%2C188&sr=8-3

You will also need an m6 tap to thread the holes in the bottom of the drive gear housing.