All my 3D mesh files that are on HackaDay are here for anyone to use or modify. 1/19/2017 Fixed dia. of inner inlay on cuvette holder where 100um slit goes, now it sits snugly without pinching. fixed inner dia. of front face on cuvette holder behond where the sample cuvette sits, hole dia. is 12.5mm throughout, the reason is now the 532nm Raman edge filter can rest in this pocket behind the sample cuvette. fixed the outer dia. of the 38mm lens holder coupler, it is now 40mm in dia.