Search found 91 matches

by MichaelBrock
Thu Sep 27, 2018 10:54 am
Forum: Specimens, samples and slides
Topic: Availability of Zrax mountant
Replies: 13
Views: 6298

Re: Availability of Zrax mountant

Thanks for the reply. It's a shame to hear that it's not available. Time to buy some pleurax.


Michael
by MichaelBrock
Thu Sep 27, 2018 12:55 am
Forum: Specimens, samples and slides
Topic: Availability of Zrax mountant
Replies: 13
Views: 6298

Availability of Zrax mountant

Does anyone know if Bill Dailey is still selling Zrax? His web page on zrax hasn't been updated since 2011. I contacted him about buying some but haven't heard back yet. He mentions on his site that Klaus Kemp sells it in the UK but I don't see it on his site. Wondering if I should continue to wait ...
by MichaelBrock
Thu Sep 27, 2018 12:33 am
Forum: Pictures and Videos
Topic: I have finally found some diatoms
Replies: 14
Views: 2606

Re: I have finally found some diatoms

"Lots of diversity alright. When you say "clean" do you mean you will isolate the diatoms from all that extraneous matter on the slide, or are you going to conduct that complex procedure involving acids?" Both! The process of cleaning breaks down the organic matter in the sample and diatoms. So if i...
by MichaelBrock
Mon Sep 24, 2018 7:15 pm
Forum: Pictures and Videos
Topic: I have finally found some diatoms
Replies: 14
Views: 2606

Re: I have finally found some diatoms

And a few more.
by MichaelBrock
Mon Sep 24, 2018 7:14 pm
Forum: Pictures and Videos
Topic: I have finally found some diatoms
Replies: 14
Views: 2606

I have finally found some diatoms

I carried a few sample vials with me on a trip this past weekend to the Jacksonville, FL beaches and at a restaurant near there I took a sample from the brick (and oyster bed) of an old boat ramp. I just did a quick check with a thrown together slide (dirty, reused slide and cover slip) and I think ...
by MichaelBrock
Mon Sep 10, 2018 11:53 pm
Forum: Microscopes and optics
Topic: AO Cycloptic with bent shaft
Replies: 21
Views: 2764

Re: AO Cycloptic with bent shaft

Very good. one thing, I couldn't determine is; how did you get the shaft out of it's housing? You must have removed the other knob, somehow. The other knob just screwed off. The AO exploded diagram for the Cycloptic shows that end threaded and there was no pin. I held the pinned end and unscrewed t...
by MichaelBrock
Mon Sep 10, 2018 4:41 pm
Forum: Microscopes and optics
Topic: AO Cycloptic with bent shaft
Replies: 21
Views: 2764

Re: AO Cycloptic with bent shaft

Try as I might, I was not able to remove the pin with the force I was comfortable in applying. I tried with Microbob's suggested jig but ended up splitting the first one (grain the wrong way) and just putting quite a dent in the second one. What I did discover in the process though is that the shaft...
by MichaelBrock
Sun Sep 09, 2018 8:09 pm
Forum: Microscopes and optics
Topic: AO Cycloptic with bent shaft
Replies: 21
Views: 2764

Re: AO Cycloptic with bent shaft

Apochronaut, thanks for the offer! I'm gong to go ahead and give the de-pinning and unbending a try and if that fails I'll take you up on your offer.
by MichaelBrock
Sat Sep 08, 2018 5:59 pm
Forum: Microscopes and optics
Topic: AO Cycloptic with bent shaft
Replies: 21
Views: 2764

Re: AO Cycloptic with bent shaft

I asked this question on the Facebook American Optical Microscope group and a knowledgeable person there is warning me that these shafts are frequently bent...and frequently break when attempting to un-bend them. I will probably give it a shot but I may be back looking for a new shaft :)
by MichaelBrock
Sat Sep 08, 2018 3:00 am
Forum: Microscopes and optics
Topic: AO Cycloptic with bent shaft
Replies: 21
Views: 2764

Re: AO Cycloptic with bent shaft

JeffO, thanks for the heads up! The collar where the pin is appears to be painted brass so at least that's sturdier. And thanks for the idea of using the drill collars to make a "drill block". I happen to have a pack of various sizes that I bought for some reason (whatever it was, it wasn't for thei...
by MichaelBrock
Fri Sep 07, 2018 10:03 pm
Forum: Microscopes and optics
Topic: AO Cycloptic with bent shaft
Replies: 21
Views: 2764

Re: AO Cycloptic with bent shaft

Thanks for the replies! The end in the pictures seems to be peened over a bit and I don't think it would fit through. Hard part is going to be setting it up to get a good solid backing...and finding something stiff enough to withstand the hammering (gentle).
by MichaelBrock
Fri Sep 07, 2018 7:56 pm
Forum: Microscopes and optics
Topic: AO Cycloptic with bent shaft
Replies: 21
Views: 2764

AO Cycloptic with bent shaft

I picked up a very inexpensive Cycloptic type-M from ebay. It's in pristine condition except that the shaft for the focuser knobs is quite bent. On the theory that "what was bent can be un-bent' I removed it from the arm of the microscope. I'm left with one of the knobs attached to the shaft. Unfort...
by MichaelBrock
Mon Jan 15, 2018 10:29 pm
Forum: Collecting microscopes and slides
Topic: Recommend grease?
Replies: 53
Views: 27829

Re: Recommend grease?

I spent some time researching this when I was rebuilding my AO microscopes. By way of compromise (short of paying $$$ for the built-to-task specific greases) I have been using Super Lube Synthetic grease. https://www.amazon.com/Super-Lube-21030-Synthetic-Grease/dp/B0785BFQ8Z/ref=sr_1_3?ie=UTF8&qid=1...
by MichaelBrock
Fri Dec 01, 2017 12:10 pm
Forum: Microscopes and optics
Topic: Looking For/WTB AO parfocal tube
Replies: 2
Views: 1029

Looking For/WTB AO parfocal tube

I have been honing my lathe skills attempting to turn a parfocal photo tube for my trinocular AO 20 microscope. I'm starting to run out of patience. Does anyone have a spare one? Accordion to the ever-valuable xmission site I think it's the 1044 that I need: https://user.xmission.com/~psneeley/Perso...
by MichaelBrock
Tue Nov 14, 2017 1:47 am
Forum: Specimens, samples and slides
Topic: Olivine from Hawaii
Replies: 31
Views: 8050

Re: Olivine from Hawaii

I finally have a bit of a starter collection going. I'm still working on getting my "permanent" camera set up going so I don't have photos of much of them. Here is a list: https://docs.google.com/spreadsheets/d/1LAdUuvsThr1sp-I7FsadVK90qPeqnHHiC04QTs_hKfo/edit#gid=0 I would love to trade and would l...
by MichaelBrock
Sat Nov 11, 2017 12:01 pm
Forum: Pictures and Videos
Topic: Back from hiatus!!
Replies: 11
Views: 2040

Re: Back from hiatus!!

Thanks for the links! I have mined the forms for any reference I could find for AO 20s but apparently I didn't do a very thorough job. I don't have the 1240 condenser (waiting to find one reasonably priced) but I do have the single annulus condenser. I would definitely appreciate getting that tiffs ...
by MichaelBrock
Sat Nov 11, 2017 2:06 am
Forum: Pictures and Videos
Topic: Back from hiatus!!
Replies: 11
Views: 2040

Re: Back from hiatus!!

That's beautiful! Something to aspire to with my own AO 20. How do you accomplish oblique lighting with the AO 20?
by MichaelBrock
Sun Nov 05, 2017 12:33 pm
Forum: Camera systems and imaging
Topic: Tethered shooting
Replies: 5
Views: 2784

Re: Tethered shooting

I think all of the Canon EOS cameras can be tethered to a computer via the EOS utility which you can get for free from Canon. I have a Canon t1i (aka D500) which I will be setting up this way. There is also an android app for tethering I believe. And tethering can be wireless for the later Canon's. ...
by MichaelBrock
Sat Nov 04, 2017 3:00 pm
Forum: Specimens, samples and slides
Topic: A new (?) home-made mounting medium for diatoms
Replies: 46
Views: 13058

Re: A new (?) home-made mounting medium for diatoms

I don't know anything about the hammerhead brand or if there is something special about it but Loctite also makes a glue intended for glass that they market as "crystal clear and dishwasher safe". It's Loctite 233841. Amazon and some of the box stores also carry it. I'ts on my agenda to test it shou...
by MichaelBrock
Thu Oct 26, 2017 2:27 am
Forum: Specimens, samples and slides
Topic: Olivine from Hawaii
Replies: 31
Views: 8050

Re: Olivine from Hawaii

Hahaha, reminds me of an episode of the Brady Bunch... Your directions are more than enough for my needs. Thanks again! oooooooops, I just made a wild guess, my bad. Try 4 miles at 285 deg. Actually, I was right by the river, half way between the surf and the trees. Can’t do much better on this Ipad...
by MichaelBrock
Wed Oct 25, 2017 10:56 pm
Forum: Specimens, samples and slides
Topic: Olivine from Hawaii
Replies: 31
Views: 8050

Re: Olivine from Hawaii

GPS data would be great if you have it. Right now I'm just using generic coordinates for "Lumahei Beach". 4miles SW of Kalypso Sports Bar appears to be in the mountains :lol:
Dale wrote:Michael and Lorez, do you need gps data? Does 4 miles SW of the Kalypso
Sports Bar in Hanalei, Kauai work? :x
by MichaelBrock
Wed Oct 25, 2017 6:33 pm
Forum: Specimens, samples and slides
Topic: A new (?) home-made mounting medium for diatoms
Replies: 46
Views: 13058

Re: A new (?) home-made mounting medium for diatoms

In the Diatom Forum over on yahoo groups someone started a thread earlier this month (10/6) saying that they were experimenting with polystyrene dissolved in toluene. The problem they ran into was that it required so much toluene that when they were drying the mount on a hot plate the mountant shran...
by MichaelBrock
Fri Oct 20, 2017 11:18 am
Forum: Specimens, samples and slides
Topic: Olivine from Hawaii
Replies: 31
Views: 8050

Re: Olivine from Hawaii

I have been living in Florida for 8 years and visited many locations but only started collecting sand very recently. I have a grand total of 1 sample collected locally along a stream. I would be happy to trade that of course. I'm hoping to get a chance to go to the coast (one or the other) in a few ...
by MichaelBrock
Fri Oct 20, 2017 11:10 am
Forum: Specimens, samples and slides
Topic: Olivine from Hawaii
Replies: 31
Views: 8050

Re: Olivine from Hawaii

I understand completely. That's not how I operate, but I definitely understand :D I'm a collector and I have a "collector's attitude". I appreciate just accumulating a variety of things. Obviously the more unique the item is the more collectible it is but like you I don't spend $$ on rare items. In ...
by MichaelBrock
Fri Oct 20, 2017 12:46 am
Forum: Specimens, samples and slides
Topic: Olivine from Hawaii
Replies: 31
Views: 8050

Re: Olivine from Hawaii

I have been looking around for sand swapping sites as well and found the same thing. Lots of suggestion from people that they swap sand but I found none that seem very active. I expected to find a facebook page or two for it but found nothing. I just bought some sand on Ebay and I'd be glad to trade...
by MichaelBrock
Thu Oct 19, 2017 10:59 am
Forum: Specimens, samples and slides
Topic: Olivine from Hawaii
Replies: 31
Views: 8050

Re: Olivine from Hawaii

That sand is definitely unusual! I did a little digging and the photo was taken by David Maitland. He has a website (done entirely in flash...), www.davidmaitland.com. His email address is on the contact page. Would definitely be interesting to know where he collected it. He lives in Norfolk, Englan...
by MichaelBrock
Thu Oct 19, 2017 1:44 am
Forum: Specimens, samples and slides
Topic: Unsuccessful diatom collection kayak trip
Replies: 25
Views: 5454

Re: Unsuccessful diatom collection kayak trip

I found a number of "glass glues" on Amazon as well. This one claims to be "crystal clear": https://www.amazon.com/Loctite-233841-Super-Crystal-Dishwasher/dp/B01J05XXJA/ref=sr_1_2?ie=UTF8&qid=1508377215&sr=8-2 Probably take some refinement of technique for spreading it. Hard to beat the convenience ...
by MichaelBrock
Thu Oct 19, 2017 12:52 am
Forum: Specimens, samples and slides
Topic: Unsuccessful diatom collection kayak trip
Replies: 25
Views: 5454

Re: Unsuccessful diatom collection kayak trip

Here is a picture of a quicky mount I did using "Hard as Nails" natural colored nail polish (the clearest one I had on hand). Incidental light with no transmitted light source. It was actually surprisingly clear for transmitted light as well but I didn't get a good shot of it. I'll get one. http://w...
by MichaelBrock
Thu Oct 19, 2017 12:45 am
Forum: Specimens, samples and slides
Topic: Olivine from Hawaii
Replies: 31
Views: 8050

Re: Olivine from Hawaii

Very nice photos, Michael. I have a couple of questions. First, when magnification is mentioned, at what point is the calculation being done ? A scale bar would go a long way in clarifying size, but I completely understand the limitations of the point and shoot camera so this is not a criticism. If...
by MichaelBrock
Wed Oct 18, 2017 8:45 pm
Forum: Specimens, samples and slides
Topic: Unsuccessful diatom collection kayak trip
Replies: 25
Views: 5454

Re: Unsuccessful diatom collection kayak trip

Good to hear a positive experience for nail polish. I have plenty of sand, slides, and nail polish (or I think my wife does :) ) so I'll give it a try. thanks, Mike Hi, I have had success with clear nail polish, but I don't use a cover slip.. I use objectives with a long WD to keep from making conta...