Heads up for
UK stock - 3D Jake is worth a look. They aren't in the
UK but ship to the
UK and their prices are generally pretty good. I've bought a lot of my 3D print stuff from them (esp as they seem to be the only place that keeps Aqua 4K resin in stock for more than a few hours).
https://www.3djake.uk
A) Not sure what you've found on safety gear so give this article a read:
https://printhunter.org/3d-printing-health-and-safety-tips/
Quick summary of a few key points
1) Gloves need to be Nitrile or Butile - do NOT use latex as it will melt
2) Facemask needs to filter organic particles.
B) Resin: different resins for different properties and prices. You don't have to stick to the manufacturers brand for your machine. Also note that the whole 4K, 8K on resins is purely marketing talk and is not in any way linked to printer resolution. That said 8K resins will generally hold more detail than 4K, but will also often cost more.
This can be a huge area of variety in terms of detail and durability. I can't really make a strong suggestion here, I've only used Aqua 4K Grey resin and I've found it more than suitable both detail and durability wise.
I will say avoid water-washable resins. Not only is it more hassle (whilst water is free once its been used to wash its then contaminated and has to be cured before disposing - which means evapourating off the water and curing any residue); but
WW resins can be more difficult to print with, esp with hollowed models as the
WW resins have a greater chance of tearing
Also note "eco" resins are just as toxic and dangerous as regular resins. You still need your facemask on, gloves on and its still a hazard until fully cured
c) UV Baths don't really do much and come with more faff and a higher risk because the resin still has to be washed in IPA so now you have to bag the model in a container with IPA and then immerse it in the UV bath.
In general remember the key with washing is agitation. So the wash and cure machines work by simply spinning the IPA up to wash the resin off; you can do this with a few plastic pickle jars and just giving the model a good shake inside.
Note that washing with IPA wants to be done in only a few minutes. If you wash for too long it will damage the resin model. So think in terms of 3 or 4 mins only. How long can vary depending on the strength of the IPA and the resin. But its not a huge amount of time.
You can also use denatured alcohol and acetone, but if you use acetone your wash time goes down to 30seconds or so because it will eat into the resin very aggressivly.
When I started I used 2 pickle jars- one to wash off the worst, one to rinse (and when it clouded up a bit when a model went in that was a sign to use the rinse as the wash and change the IPA in the former wash container for fresh IPA)
~Wash and cure machines are nice, but not essential.
D) So I've found those cheap UV lamps took forever to cure anything, then again even with my wash and cure I have now I'll blast a model for 30mins or more.
Even once cured like that I will often leave them on the windowsil for a day or so to fully finish and degas (and I'm in the
UK too so its not insane light levels).
The big thing with curing is to note that overcuring is practically impossible. You have to start thinking months/years to do damage. UV curing resins will react with UV light until the resin is fully cured then it stops reacting. However some people don't realise that this final state can be more fragile than they like. So they think its overcuring and thus try and undercure which is not safe nor advised.*
E) Yep. You print the model, give it a quick wash, separate it from the supports, cure and then leave to degas and then you've got your model ready to work with. Cleaning up support marks and prepping the model for paint is just the same as cleaning up mould lines off a cast model. Some models will also require assembly. Note that sometimes people will assemble and glue before curing, this is because some resins contract more when cured which can lead to warping that makes parts harder to join up after curing. So glue before curing is sometimes required - again this can vary on model design and resin.
F) Temperature. One thing you've overlooked is temperature. Resin doesn't like the cold. Most resins require at least 20C to print reliably (there's a few that need 30C but they are generally clearly marked). This is a temperature constant they require througout the print time.
Heating is a big topic and you can read a good article on it here:
https://printhunter.org/printing-and-temperature/
In addition note that I've seen more people this year having good results with brewers belts wrapped around the VAT and then a reptile thermostat to control the power and temperature of the belt.
*My observation is that people find problems because of:
1) They use very cheap/brittle resins
2) Some designs in the 3D print world are not "practical" minded in how they are designed and can end up with very thin details which will print, but which can be super fragile once printed.
3) The person is more used to modern
GW plastic models or
DnD PVC models. So they've not experienced things like Forgeworld Cast resins and the like. I'd also say
DND players are more heavy handed on their models than wargmers because they are more used to those tougher PVC models and "chucking them in the box at the end of the game". Wargamers tend to be more aware and careful.