Do you fiddle with your thingy?

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OCD

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Was hoping to have them in the production que by now, was talking to Mrs OCD about this yesterday as it has to be cleared through the bean counters before I can make the order and adding a new size is a substantial order.

We have decided we are going with anodized aluminum for the first metal ones on the 22s though and will follow with the Stainless later. I also have finally sourced larger acrylic for making these and the 25mm so those should be very soon as that is on order now. Later this week we will be putting a few of the 19mm colors back up and adding other colors and sizes as we can.
 

jrmcquill

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Was hoping to have them in the production que by now, was talking to Mrs OCD about this yesterday as it has to be cleared through the bean counters before I can make the order and adding a new size is a substantial order.

We have decided we are going with anodized aluminum for the first metal ones on the 22s though and will follow with the Stainless later. I also have finally sourced larger acrylic for making these and the 25mm so those should be very soon as that is on order now. Later this week we will be putting a few of the 19mm colors back up and adding other colors and sizes as we can.

Thanks, OCD! Will prob order another 19mm...can't seem to have too many of these bad boys!!
 

OCD

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You can pair them up by size, some of them are close but they are all different enough that with close inspection you can determine which are which.

We have been dancing around trying to get this right but I think there is no right to be found. Some folks like a nice tight fit and others like it looser. What we ended up settling on was putting the looser fit oring in the caps as they are shipped.

To compound things we did have to change orings on the caps as one order to the next on the caps has varied slightly. It used to be 9.5 x 1.5mm on the inside of both 19s and 25s then our new 25s needed #012 which were a perfect fit, the new 19s came in and needed a tighter oring because the 9.5 x 1.5mm were again too loose but many folks found the #012 too tight so we started using 10.1 x 1.6mm which is a very minor addition to the ID but also a little extra rubber to fill the gap and these fit very well. I think most will agree on this but then some still like the tighter #012.

Its easy to see here how close the tolerance is here and why they look very similar and how a very small change can throw things off. I have our caps spec'd at 0.002" +/- for the oring grooves. Any tighter tolerance and it would more than double the cost of the caps and I dont think anyone wants to see that least of all us because we would end up the proud owners of a lot of very precise caps ;)

This is the cross section measurement for the three oring sizes we have used, these three sizes cover every cap we have sold for the inside to date including Acrylic caps.

0.0590" = 9.5 x 1.5mm
0.0630" = 10.1 x 1.6mm
0.0700" = #012 (#0** imperial orings are 1/16 inch 0.070 actual)

The problem we face is getting the correct orings out to folks who come back for a replacement, which do we ship? There will always be inconsistencies because of tolerance drift in both the caps and the orings themselves. I do know though that every cap has a cartomizer and refilling drip tip passed through it here before it ships. In fact the Mrs puts both caps on her test tube to check the outside fit then puts the carto all the way through then takes it out, takes it apart and assembles them onto the tank being shipped if they were purchased with a tube.

I think what we might need to do is put together a sizer pack with all the sizes and each pair labeled then everyone can choose the size they like for whichever caps they have to match the fit they prefer and know what size they need should they want to pick up new ones then also offer individual orings by size in a few different quantities. It just seems that fit is about as subjective as flavor and this leaves us at a loss as to what to provide hence the inclusion of multiple orings for the inside with every pair of caps.

I would love to hear more feedback on this because it really is easy to get a tank set up for any personal preference but I think we need an easy way for folks to be able to identify and what they like in the first place and label in such a way so it is easy to order more.
 
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b0redagain

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I really don't know why there is an issue with the size of the orings. For the most part you'll want a tight fit so there is no issue with any accidental leaking or the carto accidentally sliding out. I understand that the tight fit requires extra force when refilling, but can it really be that big of a deal? When I first got my 25mm that oring was tight, I had a hard time pushing the carto out. Every time now I just twist the tank around the carto with it still attached to my device, allowing it to lube up, before pushing it out to refill.

I say that you should stick to one type of oring to avoid any confusion.
 
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