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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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What causes this?
This is what I observed while degreasing some parts:
http://www.flickr.com/photos/2768312...th/5121601823/ It does not seem to fade or slow down with time. Any clues? -- Michael Koblic, Campbell River, BC |
#2
Posted to rec.crafts.metalworking
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What causes this?
"Michael Koblic" wrote in message ... This is what I observed while degreasing some parts: http://www.flickr.com/photos/2768312...th/5121601823/ It does not seem to fade or slow down with time. Any clues? -- Michael Koblic, Campbell River, BC Perhaps it is a surface tension battle between degreaser & oil. If you brush the parts to clean them & thorougly mix the solution up, does the motion continue? |
#3
Posted to rec.crafts.metalworking
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What causes this?
In article ,
"Michael Koblic" wrote: This is what I observed while degreasing some parts: http://www.flickr.com/photos/2768312.../with/51216018 23/ It does not seem to fade or slow down with time. Any clues? -- Michael Koblic, Campbell River, BC Just a wild ass guess... Is the solvent a good bit cooler than the ambient air? Could it be water condensation on the surface? Erik |
#4
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What causes this?
"Michael Koblic" wrote in message ... This is what I observed while degreasing some parts: http://www.flickr.com/photos/2768312...th/5121601823/ It does not seem to fade or slow down with time. Any clues? -- Michael Koblic, Campbell River, BC It looks like surface tension of two liquids that don't mix. You can achieve the same results (well, similar) by pouring a tbsp of olive oil into a pot of water. Stir it up reeeeeally good. Let it sit. As the little puddles come together, they merge and make bigger puddles. That's what you have there, except that the densities of the liquids are closer than olive oil and water, and not as defined, so they appear as almost sheens, and not globules. But they are joining together to form larger puddles. The white part is the reflection of the light in the ceiling. Steve ;-) Heart surgery pending? Read up and prepare. Learn how to care for a friend. http://cabgbypasssurgery.com |
#5
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What causes this?
On Oct 27, 5:17*pm, "Michael Koblic" wrote:
This is what I observed while degreasing some parts: http://www.flickr.com/photos/2768312...256724344/with... It does not seem to fade or slow down with time. Any clues? -- Michael Koblic, Campbell River, BC I*think*it's*a*surface*tension*thing. Check*this*surface*tension*powered*model*boat. http://books.google.com/books?id=Nnd...A0boat&f=false Karl |
#6
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What causes this?
"Michael Koblic" fired this volley in
: It does not seem to fade or slow down with time. Any clues? Looks to me like that's an ultrasonic cleaner, and those are cavitation bubbles, moving due to harmonics in the tray or the shallow fluid. LLoyd |
#7
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What causes this?
On Wed, 27 Oct 2010 20:17:21 -0700, "Michael Koblic"
wrote: This is what I observed while degreasing some parts: http://www.flickr.com/photos/2768312...th/5121601823/ It does not seem to fade or slow down with time. Any clues? Is this just degreaser and water with parts in a tub, or is there an ultrasonic unit there? I heard a loud hum in the background of the video. I think you're right about the surface tension changing. It appears to be either grease or degreaser breaking down in the water. "Smart Scrubbing Bubbles" or "Enzyme Action" as the commercials go. Either that or you have a brazillion bacteria in your water and they have no concept of surrender. -- Most people assume the fights are going to be the left versus the right, but it always is the reasonable versus the jerks. -- Jimmy Wales |
#8
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What causes this?
On 2010-10-28, Michael Koblic wrote:
This is what I observed while degreasing some parts: http://www.flickr.com/photos/2768312...th/5121601823/ It does not seem to fade or slow down with time. Any clues? I can't get the images to play on my system. What format? a ".wmv" by any chance? Anyway -- just guessing: 1) Is there vibration on the surface (some motor running in contact with it as part of another tool? 2) It could be evaporation causing cooling on the top surface, and heat from the bench to the tray causing convection? (Or is there a heat source as part of the cleaner? That would pretty much *force* convection. Enjoy, DoN. -- Remove oil spill source from e-mail Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
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