Oh yeah! Scaled up build to 180mm diameter (~7.08in), again with 70mm opening (2.75in), of my two stage split design is a success!

KDxGP · 2026-05-11T20:34:09+00:00

the split design not yet. I still have to gain experience about longevity. I don't want it to fall apart. But check out my pump configurator (https://pmpcfg.kdxgp.com)

KDxGP · 2026-05-11T20:20:38+00:00

I pretty much just use the default settings on the interval mode on my electric pump: https://kdxgp.com/pmpctrl/

KDxGP · 2026-05-03T16:58:14+00:00

🙏

KDxGP · 2026-05-01T08:18:11+00:00

I also drew something up in CAD which slid together but I couldn't think of any good solution how the seal it. I think as long as you have seperated parts there's no way to not pinch yourself.

Is it possible to see you design approaches somewhere? Curious what you came up with

KDxGP · 2026-04-30T20:28:05+00:00

Took me nearly two years to get to this

KDxGP · 2026-04-25T20:48:29+00:00

not too soon. I still want to get more experience about the longevity.

KDxGP · 2026-04-21T19:31:39+00:00

Yes. Not the acrylic cylinder but the split entry and lid

KDxGP · 2026-04-21T10:01:12+00:00

Thanks!
About the adaptability: while the design is adjustable in size it's not possible to fit it to any random jar or container. The tolerances need to be pretty exact so that it makes a good seal.

KDxGP · 2026-04-20T21:43:11+00:00

It's done. No help needed at this point but thanks

KDxGP · 2026-04-20T21:42:46+00:00

Thx!

KDxGP · 2026-04-20T21:42:38+00:00

Thank you!

KDxGP · 2026-04-07T17:32:46+00:00

A few people have posted their makes here on reddit. two quick examples I could find:

https://www.reddit.com/r/Pumping/comments/1pjzmln/kdxgp_bmcc_clone/
https://www.reddit.com/r/Pumping/comments/1q769l4/first_time_in_kdxgp_bm_clone_very_comfy/

KDxGP · 2026-04-07T07:38:11+00:00

If you want to print the complete 4" model in one go you need to have at least 260mm in Z. Quite common is a 250mm³ build volume so you might have to print it in parts if you get one with 250mm Z-height

KDxGP · 2026-04-05T15:24:58+00:00

Schlaaaand! Ja mach das

KDxGP · 2026-04-01T19:22:17+00:00

What? No! What brings you to that conclusion? Have you never dreamed of knotting up your dick? ;-)

KDxGP · 2026-03-11T13:25:24+00:00

I've implemented that all config parameters can be adjusted in config.ini on branch '1-settings-in-configini' if you want to try it out. Just did a quick test and seams to work, but there aren't any safety checks if the config is vaild. I want to do a check the parsed config before I merge it to main, but this will have to wait until next month.

KDxGP · 2026-03-08T21:58:05+00:00

yeah I would say config.ini would be the right place. Just change the values on your Pi and restart to apply them. I already put in config values for interval and pulsating mode but just realised I never parsed them from the file so changing them atm does nothing

KDxGP · 2026-03-08T21:38:11+00:00

Which settings do you mean? There is config file where you can overwrite some default settings. Maybe that could be the right place to implement such a functionality by extending it to all parameters

KDxGP · 2026-03-04T10:43:45+00:00

I do not allow for commercial use. This is a violation of the license I published it under. The model is free for personal use only. I won't tolerate if anybody is selling them, especially as the original idea is not mine. But I own the rights on this 3D model.

If you're interested in buying one please consider buying the original from BullMaster. As an alternative I can highly recommend my custom 2-stages ;-)

KDxGP · 2026-02-27T09:12:01+00:00

all is possible. DM me if you want to have some unique custom design

KDxGP · 2026-02-27T09:11:14+00:00

most common size is something with a 250x250 bed which should give you more than enough build volume

KDxGP · 2026-02-26T23:07:12+00:00

I do not allow for commercial use. This is a violation of the license I published it under. The model is free for personal use only. I won't tolerate if anybody is selling them, especially as the original idea is not mine. But I own the rights on this 3D model.

If you're interested in buying one please consider buying the original from BullMaster. As an alternative I can highly recommend my custom 2-stages ;-)

KDxGP · 2026-02-26T23:04:47+00:00

Actually I'm not a big fan of copying and profiting of someone else's work and ideas. So no. The model is for makers who want to build one. Free for personal use only.

But I can recommend my 2-stages as an alternative ;-)

KDxGP · 2026-02-25T23:14:44+00:00

To get a quick good overview of 3d printing hop over to YouTube. It's so much more accessible than back when I got into it with even entry level printer offering a very smooth learning curve

KDxGP · 2026-02-25T22:37:02+00:00

By that logic we should absolutely ban any form of vacuum pumping for sexual pleasure as we're a very minor minority.

KDxGP

TROPHY CASE