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Dust Covers

 
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SutherlandDesmids



Joined: 25 Nov 2018
Posts: 22
Location: Sutherland, Scotland

PostPosted: Wed Dec 19, 2018 3:13 pm    Post subject: Dust Covers Reply with quote

Does anyone know of a source of dust-covers made to size for a microscope?

I'll have no difficulty with my new Optiphot at present but I intend to add an Optizoom (Nikon Optovar) and a drawing-tube in the next few months and I've never seen a cover meant to include a drawing tube. A camera apparatus could be, I think, probably removed and stored in a box when the microscope is covered up.

This is obviously a Zeiss Axioscope, but it gives a good idea of the considerable additional width added by the tube. Given the fact that the lenses can be capped, it's not so much a concern about dust getting at the tube as a normal cover 'riding up' over the tube.



Obviously I can't give you measurements until I have both. I would have asked a friend of mine who is good with a sewing-machine but unfortunately she has developed cancer and it seems hardly fair to trouble her.
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Lou Jost



Joined: 04 Sep 2015
Posts: 4023
Location: Ecuador

PostPosted: Wed Dec 19, 2018 5:17 pm    Post subject: Reply with quote

Just tape together some plastic garbage bags.
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grgh



Joined: 09 Mar 2013
Posts: 313
Location: Lancashire. UK

PostPosted: Thu Dec 20, 2018 4:01 am    Post subject: Reply with quote

Just remember all your trying to do is keep dust off your equipment.
Plastic suit covers cut down, make ideal covers, keep out of sunlight though.

One of my Zeiss scopes has a photo tube left in place with a pillow case on the scope and then a suit holder on top of that.

Cover up time less than 30 seconds.
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Pau
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Joined: 20 Jan 2010
Posts: 4907
Location: Valencia, Spain

PostPosted: Thu Dec 20, 2018 4:44 am    Post subject: Reply with quote

I have this one:
https://www.ebay.com/itm/Zeiss-microscope-large-dust-cover-G-L570xW135xH650mm-for-Axio-Lab-A1-etc-NEW/172436412212?hash=item282602d734:g:IqAAAOSwtpZYSDKG:rk:6:pf:0
Its big and very nice, it covers my Zeiss WL with the camera and fluorescence illuminator attached ...and when covered it looks like a new microscope
Of course garbage bags are less expensive although don't look so nice and some of them have more static electricity issues
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enricosavazzi



Joined: 21 Nov 2009
Posts: 1228
Location: Borgholm, Sweden

PostPosted: Thu Dec 20, 2018 5:10 am    Post subject: Reply with quote

Lou Jost wrote:
Just tape together some plastic garbage bags.

Plastic bags work, as far as keeping dust out. However, they also get electrostatically charged quite easily, and then attract dust like a magnet attracts iron filings. The next time you put the dusty dust cover on the scope, the static charge gradually dissipates, and some of the dust from the interior of the cover then transfers to the scope. Never turning a dust cover inside out helps somewhat.

I have had much lesser problems with static electricity by using cloth (even synthetic cloth like nylon/polyester). I especially like thin rip-stop rayon sail cloth. You can buy it in any color you wish ("Zeiss" deep blue is my favorite for this use) by the meter/yard and if desired you can have it machine-sewn into a cover, or just around the edges to stop threads from getting loose. The threads of this cloth are very fine and tightly woven, and virtually no dust passes through.

Even an unsewn cloth sheet works fine as a microscope dust cover, as long as the size is sufficient to abundantly cover the scope down to its base and the immediately surrounding table area. If fraying at the unsewn edges becomes a problem, sewing shops sell a kind of scissors with zig-zag cutting edges to trim the margins of the cloth and lessen (although not completely stop) the problem with fraying.

Shaking the cloth out of a window or terrace once in a while gets rid of most of the accumulated dust. Rinsing or machine-washing is possible, although rarely necessary except if the cloth is exposed to unusually high concentrations of fatty or corrosive contaminants (e.g. cooking vapors or an open fireplace). An antistatic spray may further help to keep dust away, although some of these sprays may actually generate dust on their own.
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Lou Jost



Joined: 04 Sep 2015
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Location: Ecuador

PostPosted: Thu Dec 20, 2018 5:15 am    Post subject: Reply with quote

Enrico, doesn't cloth shed fiber fragments? Maybe thick aluminum foil or those aluminum survival blankets would be a good choice of material.
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enricosavazzi



Joined: 21 Nov 2009
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Location: Borgholm, Sweden

PostPosted: Thu Dec 20, 2018 7:45 am    Post subject: Reply with quote

Lou Jost wrote:
Enrico, doesn't cloth shed fiber fragments? Maybe thick aluminum foil or those aluminum survival blankets would be a good choice of material.

Not much shedding from the rayon cloth I am using. Synthetic fibers are in principle a continuously spun length, so the opportunity for shedding is only when the fibers become broken, e.g. by wear or repeated folding/unfolding. Compared to the amount of dust collected by a statically charged plastic bag, the cloth wins hands down.

I am not sure why woven plastic cloth seems to collect much less static charge than plastic sheet. It must have something to do with the presence of fibers rather than the nature of the material in itself. Possibly the static charge tends to distribute evenly on surfaces, and surface area in a woven cloth (at a microscopic scale) is much higher than on a plastic sheet.
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Olympusman



Joined: 15 Jan 2012
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PostPosted: Thu Dec 20, 2018 8:48 am    Post subject: Dust covers Reply with quote

I have been restroing an inverted metallurgical microscope and one day in my workshop I made an amazing discovery.
Those "tote bags" you seem to get when you subscribe to anything are great dust covers. Cut off the handles and turn them inside so that you don't have to live with the logo.

Mike
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SutherlandDesmids



Joined: 25 Nov 2018
Posts: 22
Location: Sutherland, Scotland

PostPosted: Thu Dec 20, 2018 12:49 pm    Post subject: Reply with quote

My sincerest thanks. All most helpful.
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Alan Wood



Joined: 29 Dec 2010
Posts: 311
Location: Near London, U.K.

PostPosted: Thu Dec 20, 2018 2:37 pm    Post subject: Reply with quote

When I wanted a dust cover for my Olympus CK2 inverted microscope, I could not find a suitable standard one.

Most of the made-to measure ones were made of poor quality material.

I am in the UK, but I ended up ordering one from CompuCover in the USA:
http://www.compucover.com/

I am very happy with it, strong material and well made.

Alan Wood
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Lou Jost



Joined: 04 Sep 2015
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Location: Ecuador

PostPosted: Sat Dec 22, 2018 5:55 am    Post subject: Reply with quote

Enrico mentioned above that plastic dust covers attracted dust. While this might seem like a negative, it might instead be a desirable feature of dust covers. It may be that a dust cover which attracts dust doesn't shed dust when you lift it off the microscope. A normal cover might shed dust onto the scope when removed, defeating its purpose.
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iconoclastica



Joined: 25 Jun 2016
Posts: 235
Location: Wageningen, Gelderland

PostPosted: Sat Dec 22, 2018 9:58 am    Post subject: Reply with quote

I have an epi-illuminator in that position, that sticks out in a similar fashion as the drawing tube. When I am done for the day and about to cover up the microscope, I loosen the screws somewhat so the illuminator can be turned. Then I align the tube with the stand. Sometimes when I feel like it I turn the head too so the eye-pieces face away. The dust cover (aw right, dustbin liner) then fits easily.
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