Hello guys

Hobbybob will recieve 2 quad reds 660 soon and to combine them i,m looking for a 660nm wavelplate. Dave did a while ago a groupbuy for different wavelengths including 660nm.

If anyone that joined this groupbuy and didn,t use them i,m interested in buying them.

If anyone can help mister hobbybob to get his projector ready that would be great.

Thanks guys