The XYZ curing chamber also costs about 43% less; it seems like that would be an advantage worth mentioning.
My homemade chamber achieves around 45C (without any heaters) and works perfectly fine without temperature control. I am not sure what temperature the XYZ works at, but I would suspect that the enclosure would trap adequate heat in from the lights as have all the chambers I have used do.
Does the Curebox have focused light like XYZ claims their product does? Could having focused light enable it to be possible to cure in 60 minutes or less? Seems like XYZ must have somehow determined that 60 minutes was adequate.
I am just curious; how did you determine it is not advisable to place a glass jar with water in it in the XYZ chamber? It seems like you wouldn’t recommend the XYZ product period.