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Matt, the SLA (UV curing) for sure will give you a better finish when compared to our classic FDP but to get the strength it will get expensive. I am not following what resin is best but last time when I did check it was more than 50usd on aliexpress for some resin that could be used for working elements. I could be wrong but for sure guys here can comment on this.

Thanks Jimi. I have printed today the one piece pulley and I agree removing the support was bit challenging but it came off eventually :). The one thing I dont like is the small runout when the pulley is attached, its not bad but its not perfect .... I have not measured it yet but I will do it tomorrow just to my records. I am gonna print two halves tomorrow from your file and compare. Have you noticed any runout on your 3d printed pulley ? Adam

I've received the JK 563 couple of days ago but I did not have any pulley removal tools so it took a day to get the right jaw puller... Anyway I've tried my 3d printed pulley today which unfortunately was very tight on installation and cracked.... so tomorrow another print. Thanks Jimi for the stl, but I will try the one I made in Fusion 360 first. I can share my Cura settings for support if you have problems with support being difficult to remove after print. I've also received a standard straight bore 15mm pulley as Constabulary suggested just to see how easy is to modify it for the JK. Installing 1mm sleeve sounds like a good idea but whats about the bigger 5mm key hole in the standard pulley instead of 4mm on JK ? Matt, it took an hour to have one half printed. It would be much quicker in PLA but making it in PETG and 0.1mm layer height took longer.. I've got Anycubic i3 Mega S which I modified a lot.... Its relatively good and not expensive starting platform but has few issues in my opinion so has to be modified sooner or later otherwise results are inconsistent. If you need something good from the box then Pusa i3 mk3 would be your choice.

Hi Matt. I think I will give it a go knowing that guys here use Jack without problems other than adapting a small pulley. I have just printed half of the pulley with 0.1mm resolution in PETG from the stl project someone has shared here but I would prefer pulley in one piece so I will have to make own sketch. I agree with you that running on high RPM would most likely deform the 3d printed pulley due to running temperature. Maybe nylon would survive longer as it has higher melting temperature but printing it brings some difficulties as well. I have reached JK representative in Europe and somehow they were surprise why would I need to change the pulley as there is speed regulation per design...

Matt, I am planning to buy the JK 563 and after reading all the topics on the forum looks like there is a problem to source a 40mm replacement pulley with 13mm bore. So my plan was to print one and ask friend to fabricate one for me which would take time for sure... By any chance would you know where to get 40 or 50mm pulley for JK servo motor in the UK? Thanks Adam

Hello, I realise this is old topic but I wonder how long "Stor's" 3d printed pulley survived. I would like to 3d print it as well but from PETG or later from stronger nylon if this actually makes any sense :). Probably custom made pulley would be the best solution. I also wonder what is the size limit for the needle positioner if any. Adam