Making Rubber Stamps With Photopolymer Resin (Part II)

I bought the photopolymer resin (or stamp resin) and base sheets (for creating a sturdy backing for the rubber stamp) from a factory around Eunos. The resin is $25 per kg, base sheets are $3.50 for an A3 size.

I have tried the materials and procedures with my current exposure unit which is built for silkscreen but it didn’t cure the resin, it remained honey-like. My guess is that the wavelength of the UV in my current exposure is not in the range for curing the resin. I checked the MSDS of the brand of resin I am using, and it takes a wavelength of 310-380 nm to cure. The light tubes in my current exposure unit is at 400 nm upwards.

It must be the wavelength, so I’m getting another light fixture and 2 new UV light tubes. That’s another $50-60. Wish me luck.