LG Electric Stove Knob Bump Lock

I got tired of accidentally bumping the stove burners on, which are on the front of our stove at hip level. I quickly drafted this up. It quickly slips under the knob and prevents the knob from being able to be bumped in enough to turn to any setting.

The spacer section is 4.3mm thick (distance between knob and stove).

The outer diameter is 68mm and the inner diameter is 27mm. These might need to be adjusted for models other than ours.