Member postings for Geoffrey Morgan 1

Here is a list of all the postings Geoffrey Morgan 1 has made in our forums. Click on a thread name to jump to the thread.

Thread: Drill Chuck, Dismantle

15/02/2010 22:42:05

Thanks to all for the reply concerning the term for white spirits. Varsol is a particular brand of mineral spirits in the U.S. (I believe Varsol belongs to the progeny of ol' John D. Rockefeller and the Standard Oil Company) I thought as much, but as is most usual in these cases, I had some doubts. Varsol is also a variation of Stoddard Solvent. There may be slight differences as to component mixtures and specific gravities, but they are interchangeably similar. Primarily used to thin standard enamels (not synthetics) and as a general degrease agent.

As to the actual subject of disassembling drill chucks, I must confess that I have been successful a couple of times as well as rupturing the outer sleeve in at least one case. Confessions of someone with a hydraulic press and not enough patience! It has progressed to the point where the replacement parts are almost too expensive and difficult to obtain to make rebuilding worthwhile. Of course, if one is lucky, there is e-bay and web sites like this one. Regards, Geoff M.

12/02/2010 19:01:54

Please excuse my lack of proper English, but can someone give me the American equivalent of white spirits. I am assuming that it is the same as our mineral spirits or Stoddard solvent, which are petroleum based solvents used in regular enamel paints, shoe polish, etc. Stoddard solvent is a blend of light petroleum distillates developed early in the 20th century by a pharmacist. At least I know the relationship between paraffin and kerosene. Many thanks. Geoff M.

Thread: Constructing a D1-4 Mount

06/02/2010 19:18:42

Thanks for the advice. The idea is related to lathe application. I was considering making a drive plate for use to drive a dog for between centre work. The face plate supplied with my machine is a massive unit and it just seemed more convenient to have a more specific service component.

Most of the chuck backing plates commercially available are too thin in section (beyond the registering shoulder) to allow for the drive slots to be milled proud of the spindle. It also seems that since the decline of the Western lathe manufacturers, the Asian machinery makers do not offer the drive pattern plates that used to be standard.

I like the idea of a plug gauge which I can check with Prussian Blue, etc. At least with that scheme I would have a matched set of component tapers, although I am sure that very few of the Asian machines would meet exacting BS or American standards.

06/02/2010 04:01:06

I have considering attempting the construction of a D1-4 pattern chuck mount for an obsolete five inch chuck that I hold. I am rather intimidated by the 7 degree 7 minute something seconds taper that I will have to turn not to mention the high degree of accuracy the hole location for the mounting studs. I understand via a post on the Practical Machinist site that at one time an article was published in the Model Engineer (or ME Workshop) wherein a simplified method was described about this undertaking.

I have tried the search engine on this site with no luck. All comments are welcome. Thanks, GM

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