You CAN teach an old dog new tricks. I read somewhere on SCS that you can put your gamsol (odorless mineral spirits) into a Tim Holtz alcohol ink refillable pen and it works! I use it when I color with my prismas but I always used stumps to blend. This works great. ANd the best thing is I was going to buy it in ACMoore for $5.99 but decided to wait and check them out since I was going to Michaels and they were on sale $2.99 each so I bought two! That's all I got today in my short travels.