There are clamps that require a threaded spindle. And there are collet-type clamps.
Probably the easiest type to use is actually called a record weight. It performs the same basic function as a clamp, but it uses heavy weight to hold the record down, instead of clamping pressure. There are numerous variations of these record weights around, or you could make your own out of something heavy and about 4" around with a 1/4" hole in the middle.
One word of warning about weights, some turntables have fairly weak main bearing structures, and sometimes the thrust pad in the bottom won't handle the extra weight. Check with your manufacturer about this.
Probably the easiest type to use is actually called a record weight. It performs the same basic function as a clamp, but it uses heavy weight to hold the record down, instead of clamping pressure. There are numerous variations of these record weights around, or you could make your own out of something heavy and about 4" around with a 1/4" hole in the middle.
One word of warning about weights, some turntables have fairly weak main bearing structures, and sometimes the thrust pad in the bottom won't handle the extra weight. Check with your manufacturer about this.