I do on a daily basis. Steve WB0DBS
> On Apr 26, 2020, at 12:10 PM, Richard Solomon <[email protected]> wrote: > > What about us folks that wear glasses ? > Can you use the OptiVisor with eyeglasses ? > > Tnx, Dick, W1KSZ > >> On Sat, Apr 25, 2020 at 11:28 PM Charles Steinmetz <[email protected]> >> wrote: >> >> Burt wrote: >> >>> I have an AM-SCOPE 7-35 magnification stereo microscope. I also have an >>> OptiVisor with a 5x stereo lens that my son gave me about 10 years ago. >>> As nice as the microscope is, I generally wind up using the OptiVisor. >> >> Optics: >> OptiVisors are *great*. But there are lots of poor-quality imitations >> out there. Accept no substitutes! Buy Genuine Donegan OptiVisors >> *only*, with "DA-" series glass lens plates (blue lens frames) -- *not* >> the "LX" series with acrylic lenses in clear lens frames. >> >> The one drawback of OptiVisors is that if you want higher power you have >> to settle for reduced working distance. At some point, I don't really >> want my face that close to the hot iron and solder vapors. For >> soldering, I find the DA-5 lens plate (2.5x at 8" working distance) is >> my practical limit. A good stereo microscope (with reduced-power barlow >> lens) solves this problem. >> >> BTW: Even 7x is *way* too much power for comfortable use as a soldering >> magnifier, IMO. You might want to try a 0.2x to 0.3x Barlow lens, such >> as the AmScope model SM03, which could make the experience much nicer. >> And possibly some lower-power eyepieces. >> >> So: How about a wearable version of the stereo microscope (best of both >> worlds)? >> >> Those are called "surgical loupes." And they are a pure joy to use. >> Once you try a pair of properly fitted and collimated surgical loupes, >> you will never go back to anything else for soldering small parts. >> >> However: surgical loupes are moderately to very expensive, and it's hard >> to economize by buying used because they really need to be fitted and >> adjusted by an optician who knows what (s)he is doing or you may have >> eyestrain using them. If you are optically knowledgeable and can figure >> out the misalignments for yourself (say, if you have sucessfully >> collimated a few pairs of binoculars), it is possible to self-fit them. >> *Note* that the collimation problem arises with stereo microscopes as >> well -- many of the old venerable models you find used (B&L, AO) are >> badly out of alignment. >> >> Soldering: >> Finally, there is no need to flood IC pins with so much solder that you >> need solder braid to remove it. The secrets are (1) use the right iron >> tip (a flat or slightly concave bevel tip is one of the best, but a >> spade will work); (2) keep the tip surgically clean; (3) keep the tip at >> the right temperature; and (4) use quality solder with plenty of flux. >> To see it done right (in less than 3-1/2 minutes), watch: >> >> <https://www.youtube.com/watch?v=5uiroWBkdFY> >> >> >> Best regards, >> >> Charles >> >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
