Height Adjust Knob - Troy Bilt TB230 lawnmower and many others

My mower's previous owner's dog chewed the height adjust knob so I wanted to make a replacement. 

It needs a bit of curve to it but I designed it flat so a little heat and a hammer help it go on. The tang it goes on is cupped and has a bend but with the front (side with slots) I was able to get a PLA prototype on and the final ASA version shown in the photo went right on. The PLA prototype had to be destroyed to remove so I think it attaches quite so well you probably can't remove without total destruction.

I printed in ASA upright, no supports but a 3mm brim for stability.

$12 on Amazon:  MTD 720-04131A Knob for Murray Troy-Bilt Yard-Machines Trail XP B2M7 B2J1 A1JC B2JI B29Q VB2M 720-04131

• OEM MTD Part Number 720-04131A Replaces Prior MPN 720-04131
• Compatible with MTD, Murray, Troy-Bilt, Yard-Machines, Craftsman, Huskee, Columbia, Mastercut, MTD Gold, Remington, MTD Pro, Snapper, Black and Decker, Yard-Man Tractors
• Fits Models: Sure Cut 21 inch, B2M7, B2J1, A1JC, B2JI, B29Q, VB2M, VB20, TBWC23XP, TBWC23B XP 2023, TBWC23B XP 2022, TB610, TB510, TB490XP, TB450XP, TB430XP, TB410XP, TB400XP
• Also Fits Models: TB230B XP 2022, TB230, TB220BXP 2022, TB220, TB210B 2023, TB210B 2022, TB210, TB200, TB196, TB170XP, TB160XP, TB160, TB140, TB130XP, TB130, TB125, TB120B 2023, TB120
• Also Fits Models: TB110, TB105B 2023, TB105, TB100, TB100 2023, SP90, SP65S, RM130 Trail Blazer, RM110 Trail Blazer, P21XL-H, P21XLC, P21XL, ME21625, ME21550, M80 2022, M70, M110 and More...