The Boley Leinen lathe acquired a new attachment: an old Waldmann but serious machine lamp (WD 306). I got the lamp from a ebay bid and replaced some of the components that where worn by the use. It was a surprise to discover that Waldmann served the spare parts with no problems although we are facing a really old model. Great! Here there are a picture of the lamp in place.

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Some days ago Sam Kowalski, a happy owner of a Boley-Leinen laths asked me for the dimensions of the collet’s drawbar. He is posting some nice pictures of his lathe restoration here. Sam, here you have a handmade sketch of the drawbar ;-). Don’t hesitate to ask for more details if needed.

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Before and after Before: After: Some pictures of the lathe After more than a year of investing time in the great Boley-Leinen LZ4SB lathe, the following pictures show the result:

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The Leinen LZ4SB lathe cabinet has a drawer that is usually used to store the collets set. This requires to make a wood support to organize the set. I want also to store some usual tools: some live and dead centers and the wrenches needed to operate the lathe. I begin by cutting a couple of plywood pieces to the approximate size of the drawer. I glue them to obtain a thicker plywood support.

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The Leinen LZ4SB leadscrew is supported by two bearings. One of them, the corresponding to the adjusting end, has been eroded maybe for a deficient lubrication. This need to be faced again to recover the bearing surface. We plan to do that using a boring head on the milling machine. To support the part in an orthogonal position first an adjusting stud is turned in a lathe. This will guide the bearing when clamped to the table.

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I got them Yesterday I acquired an almost complete set of collets for the Leinen lathe. It was achieved through a rather unusual offer in german ebay. After an year following ebay and other forums looking for Leinen collets last week I found an almost complete set in very good condition and including the draw bar. It was really an incredible discovery. I found no traces of leinen collets during a year and suddenly it appeared an entire set of them.

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The two speed driver of the lathe runs in an oil bath. Two plugs let to replace the oil when needed. We made two operations with them: Adding a neodymium magnet to the draining plug to let it to catch the debris. The magnet is a counterbored ring bought at Aimangz. The magnet was screwed to the internal part of the plug. The plus are in a difficult position to be tightened.

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The lathe uses a flat belt to transmit power from the speed change to the spindle. After painting the stand it is now time to install the belt. The belt installed was a 42mm Esbelt LF-14 nylon-leather combined belt supplied by Armengol-Prat. This belt should be glued in-place. This was done by the supplier itself by using a hot gluing press as shown in this picture: After the waiting time to cure the belt glue the belt was tensioned to 0.

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