Hunt Corporation Boston Model 18 and 19 Electric Pencil Sharpener restoration kit
Helical 70 tooth plus 25 tooth inner gear kit with 2 stainless steel screws included
We've developed a repair solution for a stripped inner gear and broken main drive gear
This Nylon gear set has improved design with wider face for better durability and performance
Our gear set is 20% wider compare to OEM and other replacements.
70 tooth gear fit snugly and won't slip of the shaft thanks to the fine tuned bore configuration
and 15 degree Helical teeth angle
FDM made out of Nylon - tough and flexible plastic
Also will fit X-ACTO ELECTRIC PENCIL SHARPENER MODEL 18XXXCN
Do not waste money for ABS, PLA plastic gear that may strip or melt
Only Nylon should be used for
gears where a slippery surface is desired.
All other materials (PLA, ABS, PET, etc.) will grind creating a plastic dust and eventually
fail!
Installation require some mechanical skills:
a. Take unplugged sharpener apart
b. Cut stripped part off to the length of ≤8mm (0.3")
c. Drill two 1/16" pilot holes, attach new inner gear to the frame with 2 screws (included)
(opening for shavings release must face down)
d. Unscrew steel cutting blade shaft, clean and lubricate
(do not lubricate nylon gear surface - it is low friction material)
e. Install main drive gear
Assemble in reverse order
For details, please review all pictures.
Sharpener mechanism pictured for fit illustration only and not included.
Please empty shavings container regularly to prevent gear stripping.
If your Boston 19 sharpener has just the inner gear stripped (incorporated in to ABS plastic frame)
Please visit our eBay item number: 362649630795
Thanks for reading.