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Old 10-25-2019, 03:14 PM
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rickoff rickoff is offline
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Join Date: May 2008
Location: Maine, USA
Posts: 3,367
24 inch diameter wheels prepped

I was able to cut out my larger 24 inch wheels, and to bore the 27 millimeter holes in them. Here's a view of one of the wheels. The holes are centered on a 17 inch circle (8.5 inch radius) at a point where each of six 60 degree radian lines intersect that circle. The hole at the center of the wheel is drilled 1/4 inch to accept a 1/4 inch x 2 inch long stove bolt that is fitted with a 1/4 inch washer on each side of the wheel and then snugged with a 1/4 inch nut. This way I can mount the stove bolt in a drill chuck to rotate the wheel as I sand the rough cut perimeter, which was cut with a saber saw. After sanding the perimeter, I will enlarge the center hole to 3/8 inch to accept the shaft which the wheels will be rotating upon.

Below is an image of the 27 millimeter boring tool that I used for drilling the pipe attachment bore holes. The pilot drill for this tool is 3/16 inch. While this appeared to be an ideal tool for the intended use, I found that, while cutting, the space between teeth loads up rather quickly and that I have to keep cleaning out that material since it has nowhere to go. Also, I found that even though the hardboard panel is only 1/4 inch thick, it was difficult to drill more than half way through the panel without burning the material. Thus, I found that the best solution was to drill just half way through one side and then flip the panel over to finish drilling from the other side. For a larger size build I would definitely prefer using an adjustable cutting tool.

"Seek wisdom by keeping an open mind to alternative realities, questioning authority, and searching for truth. Only then, when you see or hear something that has 'the ring of truth' to it, will it be as if a veil has been lifted, and suddenly you will begin to hear and see far more clearly than ever before." - Rickoff

Last edited by rickoff; 12-04-2019 at 04:35 PM.
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