I(16) do quite a bit with resin and most of it I will buy myself.
I have not had any problems with it so far so when my sister(23) asked to make something for herself, I agreed. I walked her through it and she still messed it up. I am not trying to sound mean but, objectively, I think i gave very simple instructions.
The resin I use is an air drying part A-part B type. She had wanted to do a marble effect, which I told her I wasn’t comfortable doing, but she insisted and said she would do it herself so I agreed.
We made the two cup of separated colors but she did mess up on the amount of resin once, when i corrected it I poured the excess into a different cup and told her to use that cup very explicitly. She did not. She, instead, used a new cup. When I called her out on it, she said she was sorry and just hadn’t heard me. I get that sometimes you just don’t hear it but resin measurements are very sensitive and i expected her to listen.
I got it under control and we let them set. They did not set.
I had not mixed nor measured at all since she insisted on doing it all so I do think it’s fair to say it is her fault that it did not set correctly, especially since I’ve never had any problems with it. Also, I had left her to fill the molds herself, and reminded her before I had left to clean up when she was done as there is a bit to clean. She didn’t clean, pick up, nor put away anything at all. I was left to do it all the next morning when I had seen it. I told her all of this as well.
Over Christmas, I got a new mold. My sister asked to make one. I knew I would have to walk her through it again so this time I asked she pay for the materials used and she agreed without complaint.
She did it all again and the next day I hadn’t had time to check on the work area before we had friends over and got distracted by them over as we are very close, one practically feels like my brother.
When we went to the dinning room, I had seen that the black pigment was still out. Everything else was cleaned, it was just the pigment. This annoyed me but I would’ve brushed it off.
But the bag was /open/ so when I picked it up, it spilled on me. I got a bit upset, it ruined a pair of my favorite pants entirely. I told her and she just shrugged and didn’t care that much. Most of the resin she had done, as well, did not set again. I know this resin and it works well as I have had no problems with it setting before. With this happening again, I told her I would prefer she not use my resin again and if she wanted something to just ask me to make it for her.
She immediately got upset and only then started arguing about how it ‘wasn’t her fault’, which i disagree with. No voices were raised and it wasn’t that much of a thing but I still am not sure if I am in the wrong here for not wanting her to use it anymore after making the same mistakes twice and costing me my clothes and wasting some of my materials, so AITA?
Nta she doesn’t respect your things
Edit: or what you say
NTA. She doesnt seem to really care about the messes she makes and it seems like shes taking ur materials for granted
NTA – it’s on her to clean common spaces and store things properly.
Now, if she were to (a) buy all her own resin and (b) work in a less-traveled area (oh, like, a card table in the garage?), you could let her use your molds…
NTA, what are you making with the resin?
NTA, as someone who has worked with rwain in the past it’s not cheap. And as you mentioned, it needs to be measured and mixed correctly or it won’t set. Also as someone who has dabbled in different techniques, it takes practice to hone in on different techniques. Marbling isn’t hard but it definitely takes practice to get the technique down.
NTA. Resin and pigments aren’t cheap and it can get super messy. You have to clean as you go. Your sister needs to buy you replacement supplies and jeans. And I would store it all where she can’t find it as well.
NTA if she was truly apologetic, she’d be offering to replace the clothes that were damaged.
NTA. Tell her to buy her own materials and molds and sign up to take a class to learn how to properly complete a project. You tried 2x and she still failed and showed no remorse and took no accountability. This is on her. Period. She can mess up as much as she likes when she buys her own materials.
NTA – Those are your materials and your tools and if she’s just going to ignore you, why should she get to use them? It sounds like she’s using your things because she knows when it comes down to it, if she doesn’t do it right or clean it up, you’ll have to if you want to use your own tools and materials. If she can’t use your stuff, you’ll have no obligation to clean up after her and that’s a bummer for her.
You told her no and you should stick with what you said.