Nylon gear adhesive

[Fletcher]

What adhesive to repair nylon halved pencil sharpener gear?

it fails, what online pencil sharpener do you recommend?

[Andy Burns]

Maybe 3M DP8005, but it's not cheap, and the dual tube syringe is meant to be used with a dedicated applicator

[Tim Schwartz]

Hi,

I bought a 3D printed replacement gear for my Boston electric pencil sharpener for around $10 on e-bay. Now there are several vendors, and a couple of variations, so you could search e-bay for:

"Boston pencil sharpener gear" and find several choices.

Regards, Tim

[Tim Schwartz]

Hi,

I bought a 3D printed replacement gear for my Boston electric pencil sharpener for around $10 on e-bay. Now there are several vendors, and a couple of variations, so you could search e-bay for:

"Boston pencil sharpener gear" and find several choices.

Regards, Tim

[Anonymous]

Is this what you need ?

or

[Ed Pawlowski]

No adhesive will work well for that type of break but cyanoacrylates are supposed to work on nylon.

How does an online pencil sharpener work? Put the pencil into the wifi?

[Fred McKenzie]

This does not answer your question, but may be the best approach:

Fred

[Fletcher]

Sometime around Thu, 7 Nov 2019 08:57:26 -0500, Tim Schwartz [e-mail] wrote.....

It probably will not work but I'll try to glue it just once. If that fails, I'll junk it for parts.

To replace the gear I first called Newell Office Company under Exacto in Statesville NC 800-879-4868 but they no longer support the Boston Model 18 Electric Pencil Sharpener 296A so they won't sell a replacement gear.

I assumed it's nylon where it must be a really bad design given that it breaks a lot in the same spot on the net

so if an expoxy or cyanacrylate doesn't work I probably should choose a more reliable brand than this crummy Boston brand.

Like you said there are 3D replacements online I could buy. There's even a "tinkercad" model file

I don't have a 3D printer to print it

Someone suggest a better brand they like that's better than crummy Boston?

[TheExperimenter]

Ten years ago, I had to bond a wire spool to a plastic tub. Both the spool and tub were soft plastics, nylon and polypropylene, respectively. I used this:

For three years, in temperatures from 15- 90 F, the bond held fine and allowed me to wind and unwind wire around the spool. Then, one night, it came apart after I had bumped the assembly against the door heading outdoors. However, for the cost, I felt that the plastic bonder did the job. You can find it just about anywhere, home improvement stores and such. Good luck.

[micky]

An excellent idea. Probaby will last for 30 years.

We had one where the handle cyclinder fell off, but my mother kept the cylinder and the rivet and I pounded the rivet down a bit and it jst about good as new. I still have it somewhere but I use a knife to sharpen pencils.

Ours didn't even suck in the pencil. You had to push it in. Worked just fine.

[Fletcher]

Sometime around Thu, 07 Nov 2019 16:20:46 -0500, micky [e-mail] wrote.....

Thanks to all for the advice for fixing broken plastic gears. Broke with cyanacrylate & decided to give up on the epoxy. Paid $30 at Staples to replace the crappy Boston with Bostich.

ideas for inventive re-use of the old Boston worm gear & transformer?

[Fred McKenzie]

Do you know what model your Boston sharpener is? You might try E-Bay. I see various replacement gear prices ranging from $7 to $21.

I also see someone selling a "parts only" model 17 that needs a new gear!

Fred

[Fletcher]

Sometime around Sun, 10 Nov 2019 22:42:59 -0500, Fred McKenzie [e-mail] wrote.....

It's a Boston Model 18 Electric Pencil Sharpener 296A/ I've never bought nor sold anything on Ebay. I generally disassemble broken devices & keep what's re-usable. Nothing much seems re-usable except the power cord though (and I have a box full of those already).