Same: filter going into my small carrying containers, taking it on faith no contamination after that. I would love to get a filter at the end of the nozzle so that I can stills see the fuel coming up into it and avoid overfilling.
For what it's worth, I just calipered the spout of the smallest Mallwart funnel, and got .47, comfortably below .5. That being said, silicone isn't the easiest material to caliper.
@GeneH This is what I bought last year for my Baby Enders stoves. 6 Pcs Mirenlife Small Stainless Steel Funnel for Flasks https://www.amazon.com/gp/product/B01IMVGRUK/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1 Mike
If you have a small funnel without a filter; I use a 'roll your own' cigarette filter pushed into the funnel to filter suspect fuel. John
Lifetime supply of filter material. http://www.finest-filters.co.uk/aquarium-pond-filter-media/diy-foam-filter-sheets
You guys have hit on something here with filters. For the funnel a filter plug in the end of the spout would still allow me to see the fuel level as it comes up into the spout. Never ever thought of that in all the years of bemoaning filter funnels. A cigarette filter and vinyl tube jammed on one Triangia fuel bottle nozzle solves filtering w/o a funnel.
Ah yes, the "Freshette". It would provide a bit of humor, and it might actually work. A bit expensive, though. I use a Coghlan's #8100, as was referenced earlier, but Campmor has them for $1.99 USD: https://www.campmor.com/c/coghlans-filter-funnel-87964 A buyer comments that the filter screen is not fine enough for his SVEA 123 stove. I wouldn't think a SVEA 123 as risk of clogging more than any other white gas stove. If you're that worried about it, add a paper coffee filter.
As long as we’re talking filters, we can ask, ”how fine of filtration is necessary to keep a stove clean, and with an (evaporative?) wick stove like a Svea, why does it matter? Here is coffee dust that gets past a paper filter and caught in this extra fine 2 layer metal filter. (I use a paper filter because I’m lazy).
Coleman certified stove repair personnel. A friend did that class in the 90s, in Wichita Kansas, when he worked at REI Seattle. He said Coleman recommended the filter to remove particles of varnish that was a byproduct of the Coleman fuel. I filter when transferring from a container to another, or if the fuel has set for a while.
As I understood what he said. It is standing fuel that can do it. Lacquer is not created immediately. I have not filtered when I put it in the stove nearly as much as I filter it when I transfer to a carry container. It cannot be a bad thing to filter too much.
