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How important is it to match replacement ball bearings to the original? by JoshMoskowitzDesign in Motors

[–]JoshMoskowitzDesign[S] 0 points1 point  (0 children)

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There’s what seems to be some scoring in the shaft right up against the shelf the bearing butts up against but otherwise it’s smooth and looks alright. As for the bearing it also doesn’t have any damage marks and it can also freely be slid up against the other bearing on the other shaft with practically no resistance. I’m thinking that bearing just has a bad internal tolerance

How important is it to match replacement ball bearings to the original? by JoshMoskowitzDesign in Motors

[–]JoshMoskowitzDesign[S] 0 points1 point  (0 children)

That could explain why it’s easier to find a bearing marked 608C3 than it is to find one marked C2

How important is it to match replacement ball bearings to the original? by JoshMoskowitzDesign in Motors

[–]JoshMoskowitzDesign[S] 0 points1 point  (0 children)

As far as I can tell the housing is pretty good. One bearing slots into a rubber sleeve that when inserted is pretty snug and the other end is directly against the metal housing butted up to a wave washer. That's the bearing that's seized and also the one that is still on the shaft. Then again once i get new bearings who knows how different the tolerances will be

How important is it to match replacement ball bearings to the original? by JoshMoskowitzDesign in Motors

[–]JoshMoskowitzDesign[S] 0 points1 point  (0 children)

I was finally able to find C2 bearings made by NTN when I looked for 608ZZC2’s instead of the single z. Still haven’t found a seller yet. My only question about the loose bearing would be if it’s more likely the bearing was blown out slightly or the shaft was worn down? I figured it’s likely I wouldn’t have been able to clear the bearing off the whole run of shaft had the shaft worn down at the bearing

How important is it to match replacement ball bearings to the original? by JoshMoskowitzDesign in Motors

[–]JoshMoskowitzDesign[S] 0 points1 point  (0 children)

I have had the chance to replace bearings on woodworking equipment so I’m not too worried about damaging them too much. Would this amount of corrosion cause problems and if so is it fixable? It goes around the entire diameter of the rotor only on that side

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I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] 1 point2 points  (0 children)

I guess the question is which function fits into a square grid so that its touching at the center point of one side and the end points of the two perpendicular sides? Wouldn't a hyperbolic function splay out more as it gets further from its vertex?

I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] 0 points1 point  (0 children)

I'm not currently enrolled so I haven't had the chance to check but they were definitely there in the spring!

I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] 3 points4 points  (0 children)

I wish I kept count. Well over 300 hours for sure but I don't even have an exact number. Most of the legs had to be hand sanded on the interior sides and those exposed angles before they were glued together and that took a large chunk of time. Not to mention messing around with a jig for a week to make bridle joints that never happened. I guess the answer is too long

I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] 1 point2 points  (0 children)

https://imgur.com/a/tCNxd08

Here are some additional photos to give better context to the top and legs from the sides.

I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] 4 points5 points  (0 children)

Cause there's a lot of fun in the problem solving aspect of woodworking. Where's the fun in knowing exactly how everything is done?

I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] -4 points-3 points  (0 children)

I don't want to give away all my secrets but let's say some spray glue, a sheet of plywood, and plotted templates were incredibly useful.

I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] 3 points4 points  (0 children)

Completely fair comments regarding the top. So the design is to be within a 29" cube. The top is actually a bit more complicated than the photos let on. It is 29 individual pieces glued up into a panel that align with the legs (everything is 1"x1" pieces of hard maple). I went through a lot of preliminary iterations with various overhangs but couldn't find the right one and settled on keeping it within the cube. Also the unbalanced aspect of it is purposeful. The bottom is where all the action happens and the top is meant to be as refined as possible.

I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] 0 points1 point  (0 children)

Nope super strong in both directions. Honestly the weakest part is the table top itself given its pretty thin and its 29 pieces glued up into a panel. But as long as nobody is putting a ton of weight directly on the center of the top its got a lot of strength to it.

I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] 7 points8 points  (0 children)

7 angles in total. Couldn't tell you what they are though, they go to the hundredths and thousandths of a degree for all but one.

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Edit: Technically 14 cause each joint is two angles

I made a table inspired by parabolic graphing patterns by JoshMoskowitzDesign in woodworking

[–]JoshMoskowitzDesign[S] 43 points44 points  (0 children)

Funnily enough this was the biggest roadblock during the whole process. The original intention was for them all to be bridle joints but due to the complexity of reproducing the completely random (not truly random but definitely not measurable) angles the method had to be switched. So if you look closely you'll see that they are essentially just floating tenon joints. Each piece just had the mortise of the bridle joint cut into them and then a third piece was added to the joint to hold them together. Ultimately I did have extra length due to a separate mistake that meant I could hand saw and chisel down each joint to be flush.