GENERAL INFO | Phatcat3dstudio

Fair question! Before we started 3D printing, we did not own calipers either. Calipers are a measuring device and can be purchased for under $10 online or under $20 at big box home improvement stores. They are incredibly handy to own as a peptide enthusiast. There is rarely standardization in vial sizing across various manufacturers - for example, a box advertised as a 10ml box may not actually fit your specific 10ml vials. Any responsible vial box maker will require you to provide caliper measurements on custom box requests, so do yourself a favor and buy a pair!

Our official stance here at PhatCat is that we do not make purge stands because we feel it’s unnecessary, double work, and can be misleading for someone new to pens. When you fill up a pen cartridge, there will be air left inside of it that you need to purge. If you don't, you will be injecting air until the plunger has moved up enough to push that air out. Before “purge stands” became a thing, people would simply purge the air out while the cartridge is in the pen by dialing the knob and pushing until liquid comes out. Once you’ve done that, the pen is ready to use, and the pen’s plunger is in place exactly where you need it to be. Simple, one step! But if you purge the air out with a purge stand, and then move the cartridge to your pen, the pen’s plunger is still way down in the starting position. You still need to dial and push, dial and push, until the pen’s plunger meets up with the rubber stopper in the cartridge. Double work when you could have just done this in one step, in the pen. Additionally, people who are new to using pens are highly likely to not realize this and we'd rather not contribute to that potential misunderstanding.

What are calipers, and why do you assume I own a pair?

Why do you not offer pen cartridge purge stands?

Do you do custom requests?

Do you do wholesale requests?

I hate all of your things. Where else should I shop?

FAQ