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Polish out scratches in blue filter
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Hi,
I have a 2467 with some minor scratches in the blue filter. I found out the hard way with another Tek scope that you can easily make problems worse if you try to remove scratches with a plastic polish, so I am cautious. There appear no sources of NOS blue filters out there. Anybody know of any that wouldn't come up in Google? Or, a sure-fire way to polish out scratches from these blue filters? Thanks! - Ken |
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Tom Jobe
开云体育Hi,
I don't know if the 2467 uses the same size CRT filter as the
2465 and the similar scopes, but if it does, I think Victor Silva has those blue
filters.
Maybe Victor will see your filter request. If not, you could
email him at daejon1@...
Victor is?very knowledgeable?resource for 24xx
scopes, and he posts on Tekscopes when he can.
tom jobe...
PS I have a small?assortment of 24x5 scopes, but not a
2467, or I could answer my own question about the filter size.
?
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I found a product call Flitz that says it is for Metal, Plastic, fiberglass and restores paint. It works well for me on everything I have tried it on. Got it originally to polish out an acrylic watch crystal. Worked very well for that and aluminum. Very mild fine polish. Takes a little time due to being so fine. Due to being so fine it will not take out deep scratches. Would need to sand with 600 or finer sand paper first. I found it in a local knife shop or you can go to www.flitz.com.
Steve, KJ5RV |
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I have had excellent success polishing the Tektronix CRT filters using a graded series of polishing products manufactured by Novus Incorporated in Minneapolis, Minnesota. I buy them from either a local retail plastic supply house or from McMaster-Carr Supply Company. It is very easy to buy from McMaster-Carr and they ship incredibly quickly.
Specifically, the three products I use are: Novus 3 Heavy Scratch Remover Novus 2 Fine Scratch Remover Novus 1 Plastic Clean & Shine Novus 3 and Novus 2 are graded abrasive polishing compounds in thin paste form. Novus 1 has no abrasive and is used for final cleaning and adds a shine. Severe damage cannot be removed with these polishing compounds. But, taking 600 grit emery paper to a CRT filter will seriously scratch the surface so I would not do so over a wide area. Finer grit papers are certainly available from industrial hardware stores; I have papers down to 6000 equivalent grit. The old-time crocus cloth is still available! Auto supply stores sell kits for polishing discolored plastic head light lenses. I find these kits a bit over-priced but they are readily available. Also readily available is a product called, SimiChrome Polish by Happich. It is sold for polishing metal and should be tested first for compatibility before using on plastics. But, on any metal, it is really good. I have used the Novus products for many years and I do recommend them. Larry On 7/14/2012 7:55 AM, Steve Vineyard wrote: I found a product call Flitz that says it is for Metal, Plastic,... -- Best wishes, Larry McDavid W6FUB Anaheim, California (SE of Los Angeles, near Disneyland) |
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Good Day,
based on experience with CRT-filters in my 5000 series and a 7704A I can recommend some milder car polish. The product I use is named SONAX NANO car polish, which is intended for new cars and I use great care when applying it. Hint: What I have found out myself is that the follwing works well: I use a common sanding block, which I clean very thoroughly. Then, I use a clean cotton cloth and wet it. I wrap it carefully and tightly around the sanding block and use a small amount of the car polish at a time. I mark the worst scratches with some car polish first and make only circular moves. The sanding block allows me to apply pressure much more evenly than when doing it by hand. And the handling becomes very ergonomical, too. I excessively clean the CRT filter between using plain soap and water. Then, I re-inspect the surface and continue with those spots which need another round of polishing; until all areas are shiny again. For the final clean, I use some distilled water and cotton cloths to dry. Cheers, Magnus |
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I can fabricate new blue filters for the 2467x series or the 2465x series like Tom Jobe said.
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Please contact me offline if interested. --Victor --- In TekScopes@..., "KenS" <ken@...> wrote:
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Thanks to you all for your advice, both here and off-line. I'm looking into these remedies as well as fabricating a new replacement filter.
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- Ken --- In TekScopes@..., "KenS" <ken@...> wrote:
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开云体育Don’t know if anyone mentioned tooth paste…..an excellent incredibly fine abrasive…takes a lot pf patience but the results are often spectacular… I use it all the time on my lightly scratched eye glasses ? -----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf Of KenS Sent: Sunday, July 15, 2012 1:25 PM To: TekScopes@... Subject: [TekScopes] Re: Polish out scratches in blue filter ? ? Thanks to you all for
your advice, both here and off-line. I'm looking into these remedies as well as
fabricating a new replacement filter. |
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wbulte
You might want to check out the cleaning/polishing stuff used for aircraft canopies.
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I have some left from my days in the airforce (it expired, so it was canned, works just fine still :-) Given the price of an aircraft canopy and the need to keep them pristine I'd say this stuff should work for the Tek screen too. Wilko --- In TekScopes@..., "Ron Simmons" <rjsimmons@...> wrote:
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Rob
开云体育I have not responded until now. I do/have used toothpaste as well to finish (not gels but regular tooth paste) with good results. However, I have now started using the headlight de-oxide products from the auto part store. I don’t have a recommended brand as I have used a couple and both worked well. ? I did however see the comment that plastic polishes don’t work on the particular blue filter mentioned. That said, I have used the de-oxide for head lights on all colors for the 7000 series ones I work on with no issues for any colors and excellent results. ? Finally as a kid my mother used a product called Glass Wax. I have been looking for some as my thoughts are it would make a great finisher/sealer. ? I suppose that is my biggest reason for finally responding. After whatever method people use to remove scratches. Are any applying a sealer of any kind and if yes what are you using? Rob From: TekScopes@... [mailto:TekScopes@...] On Behalf Of Ron Simmons
Sent: Sunday, July 15, 2012 1:20 PM To: TekScopes@... Subject: RE: [TekScopes] Re: Polish out scratches in blue filter ? Don’t know if anyone mentioned tooth paste…..an excellent incredibly fine abrasive…takes a lot pf patience but the results are often spectacular… I use it all the time on my lightly scratched eye glasses ? -----Original Message----- ? ? Thanks to you all for your advice, both here and off-line. I'm looking into these remedies as well as fabricating a new replacement filter. |