Just traded in my rear vent chubby for a top vent chubby. My old stove had the original shaker pot, a nightmare to shake down! I had to open the ash door to shake the stove, ash everywhere! The refurbished stove has the new style shaker pot. Common sense told me that the hole would eventually wear with normal tending and shaking of the stove. How fast, don't now! Figured the more worn the hole got the more of an air leak there would be. Besides, seeing pictures of how worn the hole was on other stoves made me nervous. I tried the suggestion of placing a 3/8 fender washer on the shaker rod. It works to cover up the gap, but how good? I took this idea further and used two 5/16" x 1 5/8" fender washers, thats what I had available. I drilled out the center holes to 3/8", just big enough for the shaker rod to fit through. I then drilled holes on the top and bottom of both washers. Lacking welding experience and a welder, I used JB weld to secure one washer to the nipple where the shaker rod goes through the body of the stove. JB weld is rated for 600*, the area in question will never see 600*. If it does then I am in trouble. I used small screws to secure both washers together. Not sure how small, whatever I had lying around! Once completed there is very little clearance for air leakage past the shaker rod. When the hole eventually wears too much I simply replace the worn outer washer with a new one! I originally planned on using 1 washer and drilling/tapping the nipple for the screws, but there wasn't enough surface area to tap the holes safely. Besides if I ever wanted to remove this brilliant idea there wouldn't be holes in the stove! I planned on painting it flat black to match the rest of the stove, but I kinda like the industrial look of it. Maybe I'll run this idea past Larry!
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