RC10Nick

iTrader: (9)

My tires worked great last night! They were super grippy and while they did wear faster than I'd like, they survived about 10 packs and still had plenty of grip for my mains. I'd say I have zero reason to ever buy a carpet front ever again now that I can make my own for less than $5 in resin. I'm going to try a harder rubber next because based on what I see with the fronts, I'm not sure a set of rears would survive a race day. The picture below is the tires I ran last night next to one fresh out of the mold and you can tell it's pretty significant for only 1 race day (although I did run the same car in two classes so I guess technically two race days).

2wdMod

iTrader: (42)

Nice Nick, was that wear running the tire "dry" or with traction compound?

RC10Nick

iTrader: (9)

Thanks! I ran them dry, no traction compound. Polyurethane is pretty chemical resistant so I don't think I could soften the tire if I wanted to.

RC10Nick

iTrader: (9)

Good news everyone! Mold seasoning is dead!

I decided to risk an entire mold to see if I really needed to "season" them before using my Vytaflex 60 on them. Turns out once again it was just a problem of not enough mold release. I printed out a brand new mold, gave it a heavy coat of mold release, and injected it with the VytaFlex 60 and had zero issues demolding it.

kamlooper

iTrader: (7)

Very interesting thread, I like it! So how far would a sample pack (pint) of VytaFlex 60 get me? Enough for a set or....?
Keep up the good work

RC10Nick

iTrader: (9)

Thanks! The mini-b tires I've been making are in the 10g range, the 2.2" low profile front are in the 20g range, and the trial kit gets you about 900g of resin. If you don't screw up any tires you can easily get plenty of tires out of the 2lb trial kit. I will say, though, that I've screwed up plenty of tires. And even though I've been at this for 2 years now I still screw tires up every once in a while. For instance the 2.2" low profile fronts I recently made both had a large air bubble in the side wall, and there was a third tire I made that had a void in it so large it made the tire unusable.

kamlooper

iTrader: (7)

Nice. Have you posted any 1/10 molds anywhere?

RC10Nick

iTrader: (9)

No, I haven't posted any mold files in a while. I'm still constantly tweaking/improving them. If I get to a point where I feel like they're done I might share STL's.

RC10Nick

iTrader: (9)

Quick Resin Review: I bought some Simple Resin Enduro Flex to try out because I wanted something a bit harder than 60A for longer tread life on carpet and it's relatively cheap and easy to get. 80A is easily too hard even for carpet tires. It's right on the border of a rigid plastic as far as I'm concerned. It is also slow to spring back to it's original shape after being stretched/deformed. As an experiment I mixed some Smooth-On So Flex II into a small test batch to see if I could lower the Shore rating and the SFII supercharged the curing reaction. Rather than taking 3ish hours to set, it was set in about 3 minutes.

Simple Resin appears to be a hobbyist oriented brand under Thermoset Solutions and they've got a much wider selection of resins from which to choose. I might reach out to their sales department to see what they might recommend and get a quote for a 2 or 4 lb. sample kit. I'm hoping the Thermoset Solutions resins are as affordable as their Simple Resin brand resins.

kamlooper

iTrader: (7)

Your 26mm touring car tire mold on thingiverse, the rims the tires are mounted on, they look like 2.2 offroad rims.....?
Id like to try it on dirt if they are 2.2

RC10Nick

iTrader: (9)

They are 26mm 1/10 TC wheels like these: https://www.hpiracing.com/en/product-category/w10tw

silvertriple

I've not made any test with the Vitaflex bicomponents resin...
Had some issues with my printer. Some upgrade were already planned to print proper moulds... And I had in mind to get a second printer, able to print mutli-material... And instead of taking one printer, I actually took 2.
A resin printer : Anycubic Photon M3

and a Bambu Lab X1Carbon with an AMS system...


I did not start to do resin prints at this stage. I had a roll of TPU which was unused on the long bowden tubed Ender 5 Plus, and I tried TPU print on the new one (outside of the AMS as the TPU is too flexible for this). Beasically, for very simple tire it would eventually work, but all would depend how flex the TPU is (and it would be painfully slow prints). Maybe some Varioshore Foaming TPU could make it for onroad foam tires (they are definitely simple enough so it would work).

But as i'm still organising my printing space (my wife agreed to let me use part of our spare room for this), i'm trying to figure out resin printing... RC10Nick , it's tackling the same target as yours (doing my own tires) but in a very different way. I have a few set of resins to try for this, I will report as soon as I have the possibility to make my first attempts...


Still need to figure out a few thing about resin printing: correct exposure times, temperature influence, time and speed for the plat moving, supports... The journey will start...

RC10Nick

iTrader: (9)

Those are some seriously nice machines you got there! Good luck!

2wdMod

iTrader: (42)

been waiting to pull the trigger on the carbon edition myself.. I want the AMS with it though and they are still tweaking that.. they are on AMS V3 already since release so I'm a give it another 6 months to finish working bugs out..

silvertriple

Initially, I set my mind for a Prusa XL last year, and planed the budget accordingly... But I did not preordered...
My main issue with the Creality Ender 5 Plus was it needed too much "Tender Loving Care" :-) to get something working consistently... I'm planning for upgrades. The Bambu Lab X1C+AMS cost is lower than the Prusa XL, which allowed me for the Resin printer within the same cost enveloppe (and I had those use cases in mind)... And for 2wdMod , the X1C+AMS works flowlessly : about 100 hours prints already with a single issue quickly solved (AMS Buffer spring stuck, required to uplug the ptfe tube from the AMS in the buffer and replug it): I'll consider a second AMS later on. But compared to the Creality : a real wiki to find out solution when you have an issue, a real support, and a printer which works out of the box (the E5P took me about 48hours + to be able to get a correct first layer, and there was some intermitent random connection issues which did not help)...

Resin wise : i've found out the information I needed regarding support, exposition times and lifting times on the site of the manufacturer. It is quite precise, and said to work fine at optimal temperature as per the review... My problem is that the optimal temperature is about 7 degrees upper to what I have in the room where the resin printer is. I'm getting a heater to put in the resin printer chamber, and as soon as I have it, I'll be able to try to make tires... If successfull, you'll get an update here :-)