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EP dust cap/plug source?
Posted: Sat Jan 04, 2020 4:00 am
by Chich
Is there a reasonable source for these? I just had a look on Amazon and they are asking upwards of $40 for a set of ten 1.25" caps or 4 2" plugs. At these prices it would almost worthwhile to haunt the SallyAnn and buy up old binos for their caps if they'd fit.
I would imagine that there is a viable substitute lurking in the aisles of a hardware shop, industrial supply or sumsuch. I just have not been able to find one.
Thanks for any thoughts.
Re: EP dust cap/plug source?
Posted: Sat Jan 04, 2020 4:03 am
by Lady Fraktor
https://agenaastro.com/catalogsearch/re ... ust%20caps
But being in Canada I would email All-Star in Alberta, KW (Perceptor) in Ontario or Ontario Telescopes they may be cheaper.
Re: EP dust cap/plug source?
Posted: Sat Jan 04, 2020 4:26 am
by notFritzArgelander
Yup. Agena is my prime source of such things.... Exchange rate problems might be an issue.
Re: EP dust cap/plug source?
Posted: Sun Jan 05, 2020 12:00 am
by ARock
Ebay is also a good source, but I prefer Agena as they mention the outer diameter which is important for the eye side cap of the eyepiece which is not 1.25" or 2" depending on the eyepiece.
https://agenaastro.com/agena-plastic-en ... ellow.html
Lately 3D printable eyepiece caps have been showing up on thingiverse where you can just download and print when needed, especially if your neighborhood public library has a 3D printer for public use. Some of them are customizable, ie come with a cad file as well
https://www.thingiverse.com/thing:3134224
The one above has a scad file which you can open up in openscad (free) and edit some numbers to fit your particular eyepiece, generate a stl file and take it to a 3D printer . I have not tried this yet, but plan to, the next time I need a cap which has a non standard size.
Re: EP dust cap/plug source?
Posted: Sun Jan 05, 2020 11:39 am
by OleCuss
You can get quite a collection here:
https://eyepiececaps.com/
For items I could not get through them or other sources I've at least once gone to McMaster-Carr and gotten a silicone cap there. Never underestimate McMaster-Carr!