How much music fits on each side?
A 12 inch at 33 1/3 holds up to 22 minutes a side. A 7 inch at 45 holds three to five minutes a side.
Those are limits rather than targets. The longer a side runs, the tighter the grooves have to sit, and the quieter and thinner the cut has to be to fit. Level and low end are the first things a long side costs you. A 16 minute side cut well will beat a 21 minute side cut to the edge of what the lathe allows.
If your album runs longer than one record holds, the usual answer is a double LP, or more sides at 45 RPM. Send the running times with your quote request and we will tell you which shape works. 33 1/3 or 45 RPM? · Ask for a quote