A Resin Printed Mold System for Casting Solid Urethane Skateboard Wheels

[@BillyAyotte]

Ease Release 200 (spray) or 205 (liquid) for mold release, I've used it for years making urethane props and parts. A little goes a long way.

[@drewschmidt1334]

Murphy’s soap works great too

[@LongboardTechnology]

I really don't have a need to make my own wheels right now. But that's not stopping me from thinking more seriously about getting an SLA printer after watching this video. This design seems way more optimized, even accounting for solid wheels having less complex mold design requirements. I'm sure the eventual re-design of the cored mold will be very slick.

[@ErtsenPlayGames]

4:00 try to make hole under the wheel where u just use compressed air to release the wheel from the mold :)

[@GoodRoads]

Very interesting idea!

[@nirodha7028]

May I suggest using the central pin inside the lower mould half as a pusher to eject the wheel after pouring and curing? Injection moulds work with pushers and in this case the bearing seat looks like the ideal place to push the wheel out. It does make it a three part mold again but so much more reliable when it comes to extraction. Certainly improves ease of use. Love your content. Keep it comming!

[@GoodRoads]

I was thinking something similar: I could extend the central pin out through the top of the mold. After the cure was done I could invert the whole things and push against that pin to unseat the wheel from the mold

[@nirodha7028]

@@GoodRoads wouldn’t you be pushing the wheel into the mould like that? In my ideation it would stick out the bottom of the main mould shape (with a seal somehow)... and when the wheels is poured you push the pin with the wheel on top out of the mould by pressing the entire thing down on the table. Perhaps you meant the exact same and I misread :-) It needs to stick out the bottom that’s for sure.

[@mybike1988]

I would love to see a fingerboard wheel mold that would be cool 💁🏻‍♂️

[@Tooshort2dunk]

This sounds like an awesome idea 💡

[@stevensiwinski]

Quality looks amazing. Keep it up!

[@fran_oviedo16]

wow! Amazing job! I really aprecciate your work. i will probably try to make my own skate wheels. i have always dreamed on making homemade fingerboard wheels by this technique, but it´s a way harder :( sorry about my english, huges from Cordoba, Argentina!

[@bitsurfer0101]

Have you tried dipping the mold in Lacquer for FDM (you might need a bit of thinner to thin it down a bit)?

[@drewschmidt1334]

Make a mold from an existing wheel with mold max 30. Super great silicone for resin casting

[@dandrendall9123]

Have you looked into urethane additives to slow down weatherization of wheels? UV, moisture?

[@ExposedChannel247]

Might want to try Phrozen Sonic Mini 4k, wheel looks great :-)

[@thewyomingwave2032]

Sick! I've got a makerspace down the street. Just need to take the (free) SLA classes to run the machine and cover the material costs or time on the machine ($3/hr). I'm totally down to print a bigger mold for you. I love 62mm to 64mm hard park style wheels (nobody is making them currently). If you're game, I'd be down to run some prints, and start this journey as well.

[@GoodRoads]

Hey! I appreciate that, shoot me an email [e-mail] and we can figure out how to make that work. The next design I have cooking is a 60mm-ish pool wheel but I'd have no problem making it a bit bigger and maybe making a more all-around shape depending on what you're looking for

[@davegladstone4151]

very cool.... what is the lowest/softest durometer wheel that you think you would be able to make? I might have a job for you if interested?

[@Calmanaia]

Congratulations on the work, but I have one question, what type of resin are you using???

[@joaomanoellima5947]

Great project! I love it!

[@regularshadow7309]

you inspire me

[@nikolasm3300]

ive heard of people using cooking spray for mold release with diy injection molding, not sure how it would work with resin. You could also get silicone grease thinned with mineral spirits and then put that in a little spray bottle?

[@GoodRoads]

Yeah, something spray-able is the ideal

[@stevenday4988]

I was just wondering if you could supply me with some advice? Love the video by the way! always wanted to make my own wheels and this gave me the confidence to do just that.. What I was wondering is how would you go about making completely clear wheels? Haven't found much online and figured you probably have the experience to best advise me! Thank you in advance! A very pleased new subscriber

[@GoodRoads]

Sure! In order to get completely clear wheels you'd have to find a urethane resin that cures completely clear, which honestly I feel like I saw somewhere in my research but it was expensive and difficult to work with so I didn't end up getting any. I can't remember where I saw it but if I come across it again I'll let you know. Most urethanes naturally cure to an amber or white so you'll have to do some digging

[@SirClarkus]

Nice job!

[@PhoenixPerryisawesome]

The resin print will still be higher than the ABS / Vapor technique I think. Also, I’m really curious how the melt will impact the hub because you do lose detail with that method - you might want to design for it. I think it’ll make it harder to get a snug bering fit but this is a wild guess. Acetone would have been my first guess. Treat the fumes like resin - do it outside / vented. It’s really, really nasty. I have definitely seen The Craftsman mention some mold release for his figures but I’m not sure if it’s Urethane safe. I’m going to start with your system to look at it, then I’m going to mod it for the quad skating I do - my molds will all need to be a bit different. Also - I have a fav shape and getting good ramp wheels in it at the right height is basically impossible. Moxi gets close but the wheel could still be harder.

[@GoodRoads]

I've made some attempts at printing / smoothing ASA and the whole experience makes me just want to stick to resin for these molds. I think you're right that the molds will just come out better, and also the materials are a lot less noxious

[@quinnfoster4671]

just curious, I want to make a rounded contact surface mold so it would have to split down the middle to come out. Any reason that would not work? Given I only need one of them per board I could destroy the mold each time but reusable is best.

[@GoodRoads]

Yeah, that should work as long as the seam seals up tight and the mold doesn't leak. What kind of board are you making that needs a single rounded wheel? You've peaked my curiosity!

[@quinnfoster4671]

@@GoodRoads the rounded wheel is for a suspension electric caster that attaches to a freebord to provide thrust. My idea is it could be raised and lowered by a pull cord sticking out the top of the board. The wheel needs to be rounded for edge to edge transitions, you can look up the Summerboard sbx wheel for reference. Your newest patron btw!

[@GoodRoads]

What?! Hahaha freebords were crazy cool enough as it is, I can't imagine what a powered one would be like!

[@mariosscreations7236]

Hello i wanted to ask if you have any mold links for online buying

[@stevensiwinski]

Have you considered making silicon cap molds for your coreless wheels? I'm considering giving that a try. The only downside I see is that it may result in misaligned bearing seats due to the flexible nature of silicon.

[@GoodRoads]

That's the main reason I've stayed away from silicone for the wheel molds, I'm worried the rolling surface or bearing seats will deform. Are there stiff silicones out there? Maybe that's the ticket

[@notanotherrcchannel]

I've seen molding methods using a hard shell keyed to a soft silicone insert. Idea being the hard shell has generous draft angles to release from the silicone, then the silicone can freely unwrap from whatever crazy undercuts and dimple features, etc. Such a method may add a few steps in creating the molds, but the hard shell could be fdm printed with no extra finishing. Wheel surface would have some sweet fdm grooves/ texture. Speaking of which, it would be cool to see some grooved rain wheels.

[@taylorjackson4531]

When will you be releasing these files for use? I’m hoping to make my own skateboard soon and would like to print some wheels without cores

[@GoodRoads]

I've been working on the updated set of molds the past few days. I'm still fine-tuning stuff and I want to do some testing after I get the wheels cast, but they should be out soon!

[@taylorjackson4531]

@@GoodRoads great, I’ll be looking forward to it!

[@Wulftattoos]

where can i purchase this mold stl file? id love to do something like this for my little bro.

[@GoodRoads]

This one isn't for sale but there's a free, open source version that makes a pool wheel over at www.goodroadscollective.com/open-source-skate-wheels-coreless

[@Wulftattoos]

@@GoodRoads thank you

[@Kionage]

thats so cool what you are doing! any progress so far? i am really interested and hyped for the next design :)

[@GoodRoads]

Yup! I've been working on the new molds over the past few weeks. I've run into some printing issues and I'm also fine tuning the geometry, but they should be ready soon. Stay tuned!

[@Kionage]

@@GoodRoads nice! I already subscribed ;) are you gonna sell a couple of these new molds like the old one in your store? I would definetly buy a piece bc i got no 3D printer

[@GoodRoads]

Definitely, they should be much easier to use too

[@laduchico753]

Can you tell me the name of the chemical and the mixing ratio?

[@b5a5m5]

You should have your logo & name molded into the side of the wheel!

[@kousueki7024]

hi Chris.. can you design an electric longboard wheels?.. electric longboard is pretty popular these day..

[@josefreire6920]

Onde comprar um molde desses

[@vinming7716]

Is it possible to make 104a hardness? Just like the discontinued bones SPF im a fan of hard wheels 😄

[@GoodRoads]

You'd have to find the right urethane. I hoping to do testing and reviews of a bunch of easy-to-use urethanes here on the channel and I definitely want to get some harder ones in the rotation

[@vinming7716]

@@GoodRoads thank you so much, any idea on the availability of the specific hardness and if its possible to avail here (im in Philippines btw)

[@GoodRoads]

I'm sorry to say I don't know. The availability of different materials across the globe has been really frustrating. It would be awesome to have a database of some kind, but I'm not ready to tackle that project just yet. Something I have learned is that 104a (and other shore-A durometers up near 100) are usually listed in the shore-D scale by manufacturers instead. The two scales overlap and if I remember right 100A is similar to like a 55D? Hopefully that helps you some in your search

[@vinming7716]

@@GoodRoads very helpful indeed. Thank you sir for your advice. Ill look up on your other videos. Thanks again

[@laurentpotier6433]

Did you try polyvinylic alcohol ? Water soluble skin

[@footycheck]

I would buy a set to test out, I made custom wax molds after watching on of your videos

[@GoodRoads]

Oh that's cool! How did it turn out? Once I get my mold design nailed down I'm hoping to offer some up for sale

[@footycheck]

@@GoodRoads the wax mold is great, I run a community skate project on the most western point of Europe. I hand out the wax to all the kids in my city. love to test out the wheels

[@nfsnowboarder]

Looking to start doing this myself! What kind of 3D printer are you running to print your molds?

[@GoodRoads]

I recently upgraded to an elegoo saturn so that I have room to print some larger molds, it's working out pretty well so far. You could probably get away with something smaller if you're looking to save some money but the printer I started with was an anycubic photon and that was too small

[@pressureflipin1992]

Damn, this guy freaking rules! I'm definitely going to try this. What would you estimate the cost is per wheel? Thanks

[@jesseduffield8564]

A fingerboard mold would be awesome if possible

[@uwould21]

If you can chuck that mold up in a lathe…………u can make it smooth af in minutes by sanding as it turns

[@MrDuck-rc8kc]

What resin would you need to make a 99 wheel

[@GoodRoads]

I haven't found one yet. I've got a couple candidates lined up for 95a and 97a though

[@MrDuck-rc8kc]

@@GoodRoads that's at least enough to get a nice lil skid

[@littlelongboardguy9773]

can you by that Resin Printed Mold System anywhere ?

[@GoodRoads]

Not yet! I'm still working on getting my resin printing skill to a point where I think my prints are good enough to sell. If you've got a resin printer though the files for a set of pool wheels are free and open source: www.goodroadscollective.com/open-source-skate-wheels-coreless

[@skywolf28]

70mn dh wheels would be awesome

[@GoodRoads]

Definitely going to tackle some larger diameter wheels in the future! I think a wheel that size needs a core, so we'll have to work that out

[@caliber-do1cp]

47mm wheels id still rock them and i normally ride 54-63mm, the bearing seat is wonderful perfection in a pour

[@GoodRoads]

I've been digging the 53s I made for my street board and I like a 64 or so for a longboard or cruiser, so we're just going to have to step it up

[@dolorestabon4073]

Do for fingerboard pls

[@GoodRoads]

Working on it!

[@gabrielramalho8977]

The 4k screen are in a larger area, so from what I understand the resolution ends up the same.

[@Jacksteelmachines]

why not use a silicone mold , in a hard carrier ?

[@masterfunsize4657]

A wheel for pool please!

[@GoodRoads]

They're coming, stay tuned!

[@Sagarskater]

Hello sir. Liquid name please

[@maxveitch6613]

Make a 200a wheel

[@GoodRoads]

A super hard wheel would definitely be interesting. We'd probably have to move over to the Shore-D scale of durometer though. Shore-A tops out right above 100 so hardnesses like 150a or 200a don't really exist but like an 80 or 90D wheel would be super hard

[@NitroNTV]

Try anything similar to Cloudwheels

[@GoodRoads]

I'd never heard of these before, is that like a dual-duro setup?

[@NitroNTV]

@@GoodRoads I have no idea what that is haha, I was looking into creating my own similar wheels because the cloudwheels hub version don't fit my Backfire G2 old hub. On the website they say they use some type of foam for the core. And probably a soft PU on the outside?

[@GoodRoads]

Oh funky, so it's meant to be sort of like a tire then? I'll do some digging. It'll probably be a while before I have the skills to tackle anything like that, got to get the basics down first, but it's super interesting for sure!

[@NitroNTV]

@@GoodRoads They have normal wheels for belt drive boards and sleeves for hubs since a few months. (Btw Im talkinga about electric longboards haha)

[@SpeedMJ0729]

This liquid is epoxy resin or not ...?

[@GoodRoads]

It's a urethane resin

[@timbhuff]

Air compressor might be able to blow those wheels out of the mold

[@GoodRoads]

Now that you mention it I feel like I've seen factory videos where de-molding is done that way, good call!

[@justintietz4477]

sand prior to doing your final uv cure for sla printing.

[@justintietz4477]

This allows it easyer to post process

[@justintietz4477]

annnnnd more to that get a elegoo saturn, it is what I use, super fast and much bigger plate

[@GoodRoads]

Sanding the uncured resin spooks me a bit, do you wetsand it? Honestly, even cured it's so much easier to sand than printed filament

[@justintietz4477]

@@GoodRoads i start with soft non wet then end with wet. The steel wool would work as is too if its 00

[@djevangelista7467]

fingerboard wheels plsss

[@Vivek_kumar_099]

Bhai Tum ya tel ghat kya dalte ho

for inline skates not functional coreless wheels .