How to Fix a Broken Toaster Oven Knob

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Introduction: How to Fix a Broken Toaster Oven Knob

These knobs fit flatted or flat shafts and are designed to break before the shaft does, thereby protecting the more expensive heater control or timer elements. The only problem is that its hard to find replacement knobs that match the originals. 

Step 1: Can It Be Fixed?

This knob split lengthwise.  Sometimes they chip at a diagonal through the cylinder of the knob.  Both kinds of damage can be fixed with this repair.

Step 2: What You'll Need.

1.  Small Pipe Cutter
2.  Brass or Aluminum Tubing
3.  All Original Parts to Broken Knob

The pipe cutter was about 5 bucks.  Get the tubing at a local hobby store.  Take the knob with you.  The diameters come in increments of 1/64th of an inch (I think).  Select the size that fits snug over the cylinder of the knob.

Step 3: Cut the Tube

Measure the knob cylinder length. Cut the tube to cover most of that length, but not quite the whole thing.

Step 4: "Sleeve" the Knob.

See Pictures. 

Step 5: Replace Knob

Match the flatted side of the shaft to the corresponding flat side of the knob and slide it back on.

Step 6: Finished Repair

You are now ready to resume making toast! Keep the tubing somewhere you will be able to find it, the other knobs are sure to break sooner or later. Done at TechShop Detroit!

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3 Comments

I am trying to replace my toaster oven temperature knob. I can not get the original knob off the oven. I don't want to force it with a wedge that might break the structure that will hold the replacement knob. I order a replacement knob and have that on hand. Is there a simple way to remove the original knob?

Thank you so much for posting this! I'm inspired to try something similar for a slightly different Whirlpool oven knob (1983 vintage) which is no longer available.

I had to read this several times because it seems too good to be true. Million dollar idea...well maybe a $100 idea, but still great!!