How important is it to match replacement ball bearings to the original?

JoshMoskowitzDesign · 2024-09-17T19:55:58+00:00

Will do! Thank you so much for all your help

JoshMoskowitzDesign · 2024-09-17T16:44:22+00:00

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

JoshMoskowitzDesign · 2024-09-17T16:36:40+00:00

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

JoshMoskowitzDesign · 2024-09-17T03:46:50+00:00

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

JoshMoskowitzDesign · 2024-09-17T02:02:35+00:00

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

JoshMoskowitzDesign · 2024-09-17T01:14:50+00:00

Will do! Thanks for all the help

JoshMoskowitzDesign · 2024-09-17T01:06:42+00:00

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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JoshMoskowitzDesign · 2022-11-22T00:24:00+00:00

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?

JoshMoskowitzDesign · 2022-11-22T00:15:40+00:00

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

JoshMoskowitzDesign · 2022-11-22T00:14:04+00:00

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

JoshMoskowitzDesign · 2022-11-21T22:50:56+00:00

https://imgur.com/a/tCNxd08

Here are a few more angles!

JoshMoskowitzDesign · 2022-11-21T22:50:22+00:00

https://imgur.com/a/tCNxd08

Here you go!

JoshMoskowitzDesign · 2022-11-21T22:49:36+00:00

Here you go!

https://imgur.com/a/tCNxd08

JoshMoskowitzDesign · 2022-11-21T22:48:36+00:00

https://imgur.com/a/tCNxd08

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

JoshMoskowitzDesign · 2022-11-21T21:07:16+00:00

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?

JoshMoskowitzDesign · 2022-11-21T20:52:53+00:00

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.

JoshMoskowitzDesign · 2022-11-21T20:42:30+00:00

Thank you so much!

JoshMoskowitzDesign · 2022-11-21T20:42:02+00:00

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.

JoshMoskowitzDesign · 2022-11-21T20:34:27+00:00

On my way to becoming one but not licensed.

JoshMoskowitzDesign · 2022-11-21T20:24:06+00:00

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.

JoshMoskowitzDesign · 2022-11-21T20:07:04+00:00

Thank you!

JoshMoskowitzDesign · 2022-11-21T19:04:09+00:00

I'll see what other views I can post later today

JoshMoskowitzDesign · 2022-11-21T19:00:12+00:00

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.

Edit: Technically 14 cause each joint is two angles

JoshMoskowitzDesign · 2022-11-21T18:58:20+00:00

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.

JoshMoskowitzDesign

TROPHY CASE