Where could I find bearing guts to use in 3D-printed or turned-wood yo-yos?
I feel like I’ve read that Cabal guts might be available by directly contacting OneDrop.
I also see the Fluid 3D Spacer kit here on YYE.
Does anyone make a kit for D- or A-sizes bearings and Core Co sized pads?
I got a couple of CAD designs you could use. I don’t have a 3D printer so I had to send one to a shop. Came out okay with some minor jank and adjusted the model afterwards, but not quite sure how the adjusted seat will play as I have yet to get it printed.
Do you have a CAD design for D or A sized bearings?
Sorry man, only done C sized! I had some spare flats and Center Tracs laying around so I designed the seats to fit C. I could give you the DXF for the C seat and make adjustments so it fits D
I don’t think I have the know-how to make the changes, but I have another lead on possible D-bearing seats. Thanks for offering!
Id love to see a ln A bearing kit core co compatable wood throw
Might be worth posting in a couple of the CAD or 3D printing threads. I remember seeing a few things in there that might be of interest and maybe someone has a bearing seat library or a source for metal inserts that would act as them (like the Cabal and other systems).
The fluid 3D kits are nice 
Ideally, it would have both the bearing seat and the response pad groove.
You might be able to just get away with spacers, as nut and bolts are easily found at Hardware shops;
These C3 Spacers are in a lot of the Hybrids. Almost identical to the Mowl Spacers as well.
Sunrise Kit could be interesting for a responsive
Also old Duncan Guts and kits can be found NOS for A bearings.
https://www.ebay.com/itm/165601576171?hash=item268e9f84eb:g:2I8AAOSwdSBilRK4
With a wood yoyo would you actually need the response to be handled by the spacer?
I don’t know much about wood, but would you have to worry about the wood absorbing flowable silicone or the adhesive from pads? Cleaning out old pad residue also doesn’t seem like it would be fun since I don’t think you’d want to rub an alcohol solvent against wood?
If the goal is to use response pads, I think the spacer would need to house the pad recess as well. It seems like it would be much easier to create the wood halves accurately with fewer b grades.
I’d say use a spacer and turn the response groove.
Basically you bore a single recess of one depth on the inside of the half, rather than possibly needing to do multiple depths.
That would definitely be simpler, but I’d bet it’s easier than you think to turn the groove.
I know this may not be an answer you’re looking for, but it could be a solution. You could always make your own custom toosl to create the groove. Harbor Freight sells tiny HSS bar stock for making your own tooling. I’ve used it to make small turning tools for really detailed work. A miniature “hook” / hollowing tool out of the flat stock is perfectly sized for creating the groove. I’ve made a tiny bowl hollowing tool out of it and it’d totally work the same. Link to the bar stock - It’s good stuff. Most turning tools are made of HSS. It holds a great edge.
If that’s not an option, if you have a parting tool, usually it’s tip is similar sized to a response groove pad.
@cowmamba that’s a good idea. My concern is the level of precision and accuracy required to avoid a bunch of duds. I think the margin of error would be easier to control with pre-machined metal. I also have to wonder how humidity changes could affect the fit over time. But Eric Wolfe has apparently done it, so it’s definitely possible
