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Do you pull before pushing the contents in?
S
Started by S Y
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7 replies
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2 people
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Last activity May 29, 2026
S
S Y
68 posts·first seen Mar 2026
OP
Do you pull before pushing the contents in? I’m trying to visualize… 3ml in the syringe. Pin the cartridge, and pull 2ml of air out. Invert and push the 3ml into the cartridge. Then reverse (cartridge down), and pull the remaining air out of the cartridge. Something like that?
DO
Donny
28 posts·first seen Jan 2026
Push a little in then push pull til fully transferred. Push til resistance the pull
DO
Donny
28 posts·first seen Jan 2026
Honestly works like a charm I wouldn’t do it any other way now
DO
Donny
28 posts·first seen Jan 2026
But you do need a 5ml pipe
S
S Y
68 posts·first seen Mar 2026
Gotcha. Makes sense. Do you need to move the plunger at all afterwards?
DO
Donny
28 posts·first seen Jan 2026
I leave a tiny bubble that can safely be compressed when charging the pen
S
S Y
68 posts·first seen Mar 2026
I’m tracking. I suppose that gets pushed out when you add the needle, too. Sweet.
DO
Donny
28 posts·first seen Jan 2026
Yep and as you’ve left a vacuum on it it shouldn’t squirt a load of product out when screw needle on pen
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