We are able to offer our own in house manufactured “Dinkers” available from the Record Dept.
Dinking and Dinkers for the Jukebox explained.
Including reference to the common problem of wow and flutter.
Dinking is the process of enlarging the hole in the middle of the record so that it can be played in a Jukebox. Why is this necessary ? In the U.S.A they had a slightly different system to us when it came to playing vinyl. Originally when the first 45rpm records were produced they had a large hole made in the centre to designate the speed as 45. All the 45rpm Jukeboxes (which was the medium where most people would hear music) were designed to work with the large hole, so it became the standard in America.
The 12-inch albums had a small hole for 33 rpm, as did the earlier and original 78 rpm 10 inch records for the automatic phonographs that evolved into the Jukebox, as we know it today. The early record decks that plugged into your radio were made to promote the large hole and were made to take a stack of the 7inch discs and auto-changed them. Of course the 45rpm Jukeboxes were all made to accommodate this system being as they were, made in America, by the likes of Wurlitzer, Rock-ola and Seeburg to name just a few.
However and for reasons which are unclear, in the UK we had a system with all solid centres so that we could play any speed on our multi speed, often portable, record decks. Jukebox operators would either dink their own or have them supplied ready dinked.
Records often had pop-out centres making dinking redundant but with reissues and anything past the sixties you will probably find they have solid centres.
So how do you dink? I am sure that there are many ways but here are just a few we know of.
You could draw a circle with your kid’s school compass, then get out your Black and Decker fret saw, I’m sure we’ve all seen a few records done in this or similar ways. The problem is that the hole must be dead centre unless you are so tuneless that wow and flutter (variations in speed caused by the non central spinning disc) don’t matter.
A professional dinking tool is something to search for. Back in the ‘old’ days such machines were very common as most record stores had one, tucked away under the counter, and of course in latter years didn’t realise what they had and binned them! They are easy and fast to operate so keep looking – it’s worth it.
Most of us lesser mortals have to manage with a hand dinker, a simple device with a centre peg that fits the small hole and an adjustable cutting spike/blade for alternatively scoring both sides of the record until the centre falls out. Just make sure it’s set correctly as undersize or oversize holes will render the record as useless. A good hand dinker used properly will provide perfect large holes in your vinyl and ensure trouble free record changing on your Jukebox.
And finally:-
Always practice on a record you don’t like first and be sure to practice “safe dinking” as the cutting tip is sharp!
And remember:-
We are able to offer our own in house manufactured “Dinkers” available from the Record Dept.