Stitching Vinyl Lp Pressing Defect

Stitch length for sewing vinyl.

Stitching vinyl lp pressing defect.

Think of your stitching as if there were no thread in the holes created by the sewing machine needle those holes become a tear strip which will weaken the vinyl and make it prone to tearing. No they don t but their quality can t be denied. Non fill refers to a pressing defect that occurs when the molten vinyl does not flow fully to produce a well formed groove. It s complicated because the parameters change during production runs and with different vinyl.

In a hydraulic press fitted with 2 pre heated moulds and fitted with stampers the pre heated vinyl matter is inserted into the machine sandwiched between two completely dry labels. This was the problem that plagued classic s early 200g quiex sv p flat. Pressing vinyl is something of a lost art. Vintage records can look in excellent condition but be noisy due to use of impure vinyl and old cost cutting practice with some plants.

Once the pressing process is started the labels and vinyl matter are pressed under a pressure of 100 or more tons at a temperature of 160 c 345 f for a precise. Record players with a heavier needle seem to play through this issue better. I m assuming this is a result of a pressing defect because i have ordered two copies of this lp from two different distributors and both copies feature this identical flaw. The vinyl of the two companies i mentioned have not been subject to any defects and sounds fantastic.

It occurs most often on a 180g record s outer edge and is caused by the vinyl s beginning to harden prematurely. Sometimes you have an entire bad breakfast. The sound produced is noise a shsssshing sound that we ve all heard too often. Either you re pressing too cool the stampers are heated and cooled with each press or somewhere you re not taking the right amount of time each cycle.

New reissues can have surface noise due to defects in modern manufacture. Mint and sealed record can be less than perfect. They may not be 100 virgin vinyl but to cast aside pressings that aren t is severely limiting product. Your stitch length when sewing vinyl fabric should be longer than you would use on regular fabric.

Complete package includes lacquer mastering pressings standard black vinyl record pressing color lp labels unprinted inner sleeves upc barcode and 7 full color jackets printed on 15pt white boards. There is and was no suspect qc on those pressings. There s a few dodgy ones to start. Pressed 7 vinyl available as 33 or 45 rpm.