If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#31
|
|||
|
|||
More LED's - Again
RST Engineering (jw) wrote:
The secret is HIGH GLOSS, LOW QUALITY photo paper. The high gloss means that the toner won't diffuse into the pores of the paper and the low quality means that the backing paper will soak off easily in hot sudsy water. I can hold long 10 mil lines and 10 mil gaps with relative ease. MUCH easier than press-n-peel. Jim Well, you da man, Jim. I'll give it a try. http://www.home.earthlink.net/~tp-1/rcatest.jpg Not as crisp as the original tiff file, but... |
#32
|
|||
|
|||
More LED's - Again
The Sealing of anodized aluminum is very simple... Steam!
"RST Engineering" wrote in message .. . "flybynightkarmarepair" wrote in message oups.com... RST Engineering wrote: Now you can etch the board in the usual way. Or you can use the new, improved way without that nasty ferric chloride. Plain old swimming pool etchant (muriatic acid -- 28% HCl) from the home store plus plain old hydrogen peroxide (3%) from the drug store mixed 2:1 respectively does an admirable job at room temperature. Plus, when you get done, you have metallic copper (not a hazmat), hydrochloric acid (not a hazmat), and the hydrogen peroxide which, within half an hour, has broken down into oxygen (which has escaped into the air) and water. If you want to be totally environmentally friendly, you can neutralize the HCl with baking soda ($5.99 for ten pounds at the Charlie's Club places) before pouring it down the sink. Ferric Chloride may be safer than Muratic Acid http://www.artmondo.net/printworks/articles/ferric.htm Spent ferric chloride can be neutralized with soda as well. Plus, I THIINK Ferric Chloride is the commonly available de-smuting solution you need to anodize 2000 series aluminum. For dyeing anodized aluminum, try RIT, or page through this catalog: http://dharmatrading.com/html/eng/2934904-AA.shtml Sealing, I guess you'll have to use clear lacquer. |
#33
|
|||
|
|||
More LED's - Again
You mean like holding it over a pan of boiling water on the kitchen stove?
How long in time? Any more details or a point to a url? Jim "Cy Galley" wrote in message news:AXzTf.39602$oL.16416@attbi_s71... The Sealing of anodized aluminum is very simple... Steam! |
#34
|
|||
|
|||
More LED's - Again
The steam method is how ALCOA found out that steam seals the anodizing.
Seems they had plain anodized cafeteria trays. Coffee would be spilled on the tray. The coffee stain could be washed off most except for a few. Alcoa was perplexed until they found that if the tray was set over the steam table, then the coffee stain became permanent. Got this from an ALCOA movie when I was trying to teach science to non-believers. -- Cy Galley - Chair, AirVenture Emergency Aircraft Repair A Service Project of Chapter 75 EAA Safety Programs Editor - TC EAA Sport Pilot "RST Engineering" wrote in message ... You mean like holding it over a pan of boiling water on the kitchen stove? How long in time? Any more details or a point to a url? Jim "Cy Galley" wrote in message news:AXzTf.39602$oL.16416@attbi_s71... The Sealing of anodized aluminum is very simple... Steam! |
#35
|
|||
|
|||
More LED's - Again
"Cy Galley" wrote in message news:qaLTf.836270$x96.260249@attbi_s72... The steam method is how ALCOA found out that steam seals the anodizing. Seems they had plain anodized cafeteria trays. Coffee would be spilled on the tray. The coffee stain could be washed off most except for a few. Alcoa was perplexed until they found that if the tray was set over the steam table, then the coffee stain became permanent. Got this from an ALCOA movie when I was trying to teach science to non-believers. So if it was steam sealed, and coffee got spilled on it, then steamed after the spill, would the coffee wash off of it? -- Jim in NC |
#36
|
|||
|
|||
More LED's - Again
Yes, After steaming, it would not stain
"Morgans" wrote in message ... "Cy Galley" wrote in message news:qaLTf.836270$x96.260249@attbi_s72... The steam method is how ALCOA found out that steam seals the anodizing. Seems they had plain anodized cafeteria trays. Coffee would be spilled on the tray. The coffee stain could be washed off most except for a few. Alcoa was perplexed until they found that if the tray was set over the steam table, then the coffee stain became permanent. Got this from an ALCOA movie when I was trying to teach science to non-believers. So if it was steam sealed, and coffee got spilled on it, then steamed after the spill, would the coffee wash off of it? -- Jim in NC |
#37
|
|||
|
|||
More LED's - Again
"Cy Galley" wrote Yes, After steaming, it would not stain Cool! Now, there is some information (like a transmission jack) that I can use! g It makes you wonder why anyone would put on any sealer, that could just chip off, later. -- Jim in NC |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
KX-155 LEDs | Steven Barnes | Owning | 21 | July 11th 13 09:04 AM |
Nav Lights using Luxeon LEDs | Andrew Sarangan | Home Built | 28 | March 7th 06 09:18 PM |
More LED's | Veeduber | Home Built | 19 | June 9th 04 10:07 PM |
LEDs for Nav Lights - Jim Weir | Scott Gettings | Home Built | 3 | February 17th 04 01:53 AM |
LEDs | Morgans | Home Built | 6 | August 19th 03 03:49 AM |