Anyone doing any metalwork?

My ball molds came today ... so I spent the afternoon casting lead . Managed to cast 60/.490's and 65/.375's that were worth keeping . I ain't sayin' how many I tossed back into the pot ...
Reply to
Snag
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Finished my workbench - welding table (ok, enough to use anyway), now wiring up vfd's for lathe and mill. Got the metal for floor stands for the vise and arbor press, they're next. Then cabinets, plywood bench top, mount reloading stuff on board to clamp to bench, etc.
Pete Keillor
Reply to
Pete Keillor
Even better if you can build the entire project out of current "JUNK" on hand, and it works on the first try!!!! Gerry :-)} London, Canada
Reply to
Gerald Miller
I am thankful to have spent my early years in an environment where, if something stopped working, you learned to either fix it or live without it. I was fortunate to have a Grandfather who shoed his first horse at 8 years of age, while my other Grandfather was the only Sawyer within 40 miles - lumber mills scheduled their summer operation on his availability. Gerry :-)} London, Canada
Reply to
Gerald Miller
Right now, I'm working on excavating fifteen plus years of junk from the electronics bench in preparation for troubleshooting a Tektronix 7704a oscilloscope. (Power supply appears to be dead.) Presumably, I'll at least be doing some soft soldering (metalworking) while working on it. (Use for the recently acquired nice Pace desoldering station -- which I got at the same hamfest as the 'scope. But at least the desoldering station works fine. (As does the Scherr-Tumico 24" vernier caliper from the same hamfest. :-)
Enjoy, DoN.
Reply to
DoN. Nichols
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MB download! I wonder if it is a real schematic?
Grrr. :)
--Winston
Reply to
Winston
I repaired probably 10-12 old Tek instruments over the years and virtually all of them had shorted tantalum bypass caps. Good luck.
Reply to
Jim Stewart
It would appear so. I didn't look at that one since I don't have a 7704, but I downloaded the one for the Tek 2465B which I do have and it is indeed the full service manual. Another very helpful site bookmarked.
Reply to
Pete C.
Here's a post of mine on the "TekScopes" Yahoo group:
I recently downloaded the Service manual for my 465B from bama,
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The (free) bama manual had the diagrams cropped so badly as to be worthless. The (free) manoman was OK, but the resolution of the diagrams wasn't great.
For the paltry sum of $5, the ArtekMedia manual was/is great. There is a table of contents, you can _search_ the text (including the parts lists), and the diagrams are clearer, particularly the part names on the board diagrams. The search feature is huge and in itself is worth much more than the $5.
Keep up the good work, ArtekMedia.
Bob
BTW - the "TekScopes" Yahoo group was really helpful in fixing my scope.
Reply to
Bob Engelhardt
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Thanks. I have pdf format scans of both the 7704 and the 7704a manuals -- and the schematics are quite different between the two (including output voltages), at least in the power supply region where I am focusing. My 7704 manual is only 13 MB, so this of yours may be a better scan.
The 7704 manual I got from Iggy's "Liberated Manuals" web site, specifically for the rackmount version.
Hmm ... wget is refused connection, but it appears that opera (the browser) is connecting and downloading. 41.0 MB so far, so I will be long past sending this off before it finishes downloading.
You wanted the caliper? Or the desoldering station? Hamfests can be surprising sources of things which you would not expect. The desoldering station is reasonable, but a 24" vernier caliper is not common -- but they do show up from time to time. :-)
Enjoy, DoN.
Reply to
DoN. Nichols
Thanks -- something to focus on -- once I have the components on the electronics workbench sorted from the acorn hulls left by either a chipmunk who came in one winter, or the mice. (And -- a lot of cleaning to do, too, before I start putting workpieces on there.
I've done a lot of electronic repair work sitting at the top of the stairs, but the 7704A is a bit too big for that -- it really *needs* a workbench. (Well ... it has been over fifteen years since it got buried during the remodeling of the house. :-)
Thanks again, DoN.
Reply to
DoN. Nichols
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I got it -- yes is is the wrong scope, but a very clean scan, so have just gone back to search for and get the 7704a manual (which is smaller, only 107 MB instead of 260 MB).
Thanks again, DoN.
Reply to
DoN. Nichols
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Thanks DoN. I was just giving you a hard time for both of your very glotable acquisitions.
Good luck with fixing the Tek. Troubleshooting is great fun and I envy you.
:)
--Winston
Reply to
Winston
Excellent! I looked over the 7704 schematic when it finished downloading and was really impressed. I hope the 7704a manual is as good.
--Winston
Reply to
Winston
It's in NY out on the island. Don't know what the price is going to be yet, not that much, but probably not a good fit for what you want, parts are insanely expensive and it's got extensive rust.
Reply to
ATP
Thanks!
Still digging clear the workbench -- and separating the screws, resistors, capacitors, and transistors from the acorn shells brought in by the chipmunk. :-)
One side, and the top shelf for instruments is mostly clear, and I figure that I probably might as well dig out the other side while I am about it. (Eliminate the acorn shells which would otherwise possibly migrate into the 'scope.)
Enjoy, DoN.
Reply to
DoN. Nichols
It is -- except for the combination photos of the circuit boards (a gray dot matrix) with the component designations printed in black (which I would swear Tektronix designed to make photocopying of the manuals more difficult, decades before scanning). But, at least they are more legible than the other copy, so I'll punch them and put them in the comb binder in place of the others (the rest of which are good enough anyway.)
Thanks, DoN.
Reply to
DoN. Nichols
There are a couple former Tektronix techs that worked at their repair centers on news:sci.electronics.repair if you need any help.
Reply to
Michael A. Terrell

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