I'm going to use just a single 10440 just wanted it to be as small as possible. Other wise I would of used 18650s. Here's a photo of a 638nm version I'm putting together. This one is 20mm x 20mm x 105mm. Still gotta finish gluing the case together.
I got 405nm, 488nm, 520nm, 532nm, 555nm, 2x 561nm one of them being PMW, 591nm, 638nm, and 660nm. Also got a 570nm from the first batch from Lasence but I gotta change up the size of my print. Its power has def dimmed down went from 35mw to roughly 5mw.