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| Proxxon PD400 |
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| wongster:
Hi Vijay, It is definitely usefully; at least I won't be buying the wrong thing (I thought 82mm PCD type would fit). Regards, Wong |
| Fergus OMore:
There is some information on the old Chris Heapy site which may be helpful. OK, you'll have to move from the Japanese site to get it. There is a lot more information there for other problems as well. In addition, the late Martin Cleeve got the matter sorted out to tenths of thous by making slotted holes in the back plate. Again, the late Professor Dennis Chaddock adopted this as well. Maybe a re-think? ____________________________________________________________________________________________________________ As a sort of post script, Lathes.co.uk also has an article. Regards F O'M |
| wongster:
Thanks for the leads. I did a search and found Chris Heapy site. Will go through the articles. Regards, Wong |
| grayone:
--- Quote from: Fergus OMore on January 06, 2012, 12:46:06 PM ---In addition, the late Martin Cleeve got the matter sorted out to tenths of thous by making slotted holes in the back plate. Again, the late Professor Dennis Chaddock adopted this as well. Maybe a re-think? --- End quote --- The Proxxon is a front mount with tapped holes in the spindle flange (it is integral to the spindle unlike a Myford) so cannot be slotted. Wong I would suggest that you refrain from trying rebuild your new lathe as you will do more damage than good. Clean off any grease with a small amount of kerosene and a paintbrush then lightly oil. With respect to the guy who made the comment forget about scraping the bed the lathe as it stands is more than a match for anything you are likely to do at this stage of your hobby. Decide on what you want to make, steam engine, IC engine or whatever and give it a go. If when you try to make your project the accuracy of the machice is not good enough then that is the time to start to try to tune your lathe. Not now and probably not ever. Regards Graham |
| wongster:
Hi Graham, Roger that. No intention at this point as it is a new machine. Besides, I have not the skill/knowledge nor the courage to "improve" the lathe. I'm so far quite satisfied with the slides after playing around with the gibs. Will not attempt to remove the feed screws too; not easy to find things that fly off in a little room almost fully filled. I've started with my first simple project to get acquainted with the lathe - a tailstock locking lever of sort. It doesn't have the nice looks of those I've seen on the web, just a simple piece with M8 threads and a taller head for a tommy bar. I chose to do this so as to also learn how to thread on the machine. A simple air compressor type engine will be next, but after I finished up with the leadscrew conversion on my CNC mill. I do have a question after finishing a session turning down an unknown steel rod from 22mm to 13mm. How deep can I go per pass for steel? I've been going at 0.2mm after hearing the strain while cutting at 0.3mm. Wanted to go further but didn't want the stock to fly at me... (something that happen frequently while I was turning using the Sherline lathe. The speed used was 660 rpm with power feed set at 0.07mm/rev. The stock was about 45mm out of the chuck jaws unsupported. Regards, Wong |
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