Saturday, November 21, 2020

Designing and printing a plug with a 3D printer

 After a few years designing and printing my own plugs in my own 3D printer, it is time to share with the world what i have learned, what i have done wrong and what it is mandatory to play with 3D printed toys safely.

The main idea is to show you the know how i learned from all this years. Maybe you will choose another way to design your toys, but i think this guide will be a good start point.

There is five main points and a recommendation at the end of this post.


Idea and dimensions

First of all you need to know what you are going to design. I choose to design a plug, because it is easy to design and print, and i love them of course.
As i have a few plugs printed, i will use one of them as example.






I use the circumference dimension because is easier to me to keep a track of the plugs i print and use. Sometimes i have plugs with just 5mm of difference in circumference and, trust me, is a big difference for the ass.
Now ask yourself the dimensions do you want and draw it in a paper, it will help you later. If you want to calculate the diameter from the circumference use the expression circumference/3.14 and this one for calculate the circumference from the diameter: diameter*3.14.
The diameter is 2*radius, so if you want to calculate the circumference directly from the radius the expression is radius*2*3.14. Easy.

Designing and exporting

I use Fusion 360 to design my plugs. I will no explain how to use this software since they do small changes in every update and this will be outdated soon, so my recommendation is to look for some videos on youtube of how to create and model in Fusion 360. Maybe this will be the less informative part of this post. Anyway i will post a short video of how i use the software. Sorry for not be able to explain more about this process.


Slicing and printing

Once you have your STL file exported from Fusion 360, or any other program you use, it´s time to slice it using Cura 3D, Slic3r PE, Kisslicer, Simplify3D, etc. I like Slic3r Prusa Edition, But i will not show hot to use any slicer here, but how to make your plug strong and safe. 

After a lot of printings i decided to print all my plugs with at least 6 perimeters, that includes bot and bottom. For the infill i use 20% or 15% in 3D honeycomb, but linear should be fine. layer heigh is 0.2 for me, with 0.4 nozzle. I have printed with 0.16 and 0.12 heigh, but it takes forever to print and do not really matters.
At the video below i show how i manage to reduce the print time from 12 hours to 9 with just tweaking the speed of printing and adding more perimeters. Thats because a linear and continuous prime is faster, even if you replace that extra line with 15% infill than 25%. Sometimes is better to make the entire model done in perimeters if you want to reduce print time and complex printings. But if you want extreme strength, 2 or 3 layers mixed with 100% infill with small overlap and perpendicular directions every layers should be done. I can tell you that the first option is the correct one. Even with PLA the result will be really satisfactory.



In Slic3r PE, there is an option named "Gap fill" in Speed options,  in Print Settings tab. If you let this at "0 mm/s" the distances between the perimeters or other lines that do not reach a minimum distance will not be filled and the print will be weaker, specially in round prints like this one. Even this being true, i have tested some plugs with this in "0 mm/s" and it came very strong. Sometimes i use it at 0, and sometimes at 45 (the speed is up to you and your printer, any speed will activate this function).
Everything i said above can be saw in the first seconds of the video.

Test and preparation

This is easy, just try to rig apart you plug with your hands. I usually compress with all my forces around the plug simulating the sphincter (a strong one), and try to separate the base from the body simulating an extraction of the plug from the ass. I always do this with all my strength and never had any problem out or inside my butt.

Once the integrity of the plug is checked, it is time to protect it with a condom and a Tenga egg. Follow the pictures:


You can see clearly that the condom is not full down in contact with the Tenga egg, and thats because the neck grows again before reaching the base. Using the plugs this way is unsafe and not confortable at all. I recommend to design the plugs with the neck smaller at the lowest place, where it touches the base.



This one is better. You can see the condom covering the neck all the way down till the base. The print came out with the artifacts you see there because the printer has some stability issues, but its pretty strong. Actually it is the plug i am using right now and the biggest i can hold for a long time.

Use

The use of a plug is really simple. Insert it.

Jokes aside, i have to say that the condom will deteriorate with one use. I am used to leave the condom on the plug two or three times, but only in a short period of time like in one or two days. If you leave the condom too much time it will break easily when you insert it. Only use one condom, more than that makes the protection weaker than before.
If you leave the Tenga egg on the plug stretched till the base, the protuberances will perfore the silicone. My recommendation is to remove the condom and the Tenga egg if you are going to store the plug for more than one day.

Recommendations

Since i said everything in the two previous points, this is the end of this post.
I hope you liked it.
I encourage you to comment this or other post at this blog.

I see u!

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