Standard 22 Moderator 1/2 UNF x 20

[OldCrow]

Here is a 3mf file which you can pull into your slicer and print.

It is just a good little moderator.  This one I've dubbed the "Standard" model because after a couple of years of design, testing, tweaking and shooting it has become the standard whereby I judge other designs (there are many).  I've often toyed with the idea of going commercial with these designs but life happens.

Still I am getting a bit long in the tooth and thought it best to get this out there where others can enjoy it as much as I have.

The file is on "thingiverse.com".  I have elected not to upload it to this forum.  I suppose someone might want to do that but as a courtesy please don't.  I'd like to control the design and minimize remixes.  If you want to change the design or make a remix by all means help yourself, just change the name of the design.

If you do  print one and you find it is worth the effort and want to recommend the design to other folks, please give them this link:
https://www.thingiverse.com/thing:6969058

Thanks
Mike

[OldCrow]

Picture

[smythsg]

Mike, when I click that link it takes me to an error page on Thingiverse...

[Robert 5mm]

So did I, but I read what it said to do.

You have to Login ( maybe create user ) and then change your profile settings to accept this kind of material.
It was - Show NSFW content. ( you will have to turn it on )

[smythsg]

Yep saw that Robert but I am not ready to create a user account on the site. I am pretty selective on which sites get my information to sell to other third parties... (Just me!)

[OldCrow]

I removed the NSFW flag.
You may be able to access it without an account now.

[Privateer]

The link works fine now.
 

[subscriber]

Very decent of you, Mike

Download worked for me.

Still I am getting a bit long in the tooth and thought it best to get this out there where others can enjoy it as much as I have.

[smythsg]

Thank you so much Mike.

[OldCrow]

Very decent of you, Mike

Download worked for me.

Still I am getting a bit long in the tooth and thought it best to get this out there where others can enjoy it as much as I have.

Happy to see you again!  Been a while.  Is it just me or are the winters getting longer? 

[OldCrow]

Thank you so much Mike.

Happy to do it.  I have decided to put together a complete collection of my designs with documentation and put it up on thingiverse.  It will take a couple of weeks but once it is up there it will be a fairly complete library of designs which all fell out of the research I did between Spring 2021 and Spring 2024.  They are all "Tesla Baffle" based.  My implementation of the Tesla Baffle is a bit odd I suppose but seems to work.

Anyway here is a sample of what that library will contain:

[smythsg]

Mike, I am a complete newby to 3D printing, but decided to try your .22 version last night as a learning experience. The print was done with .12 layer height PLA with a 50% infill using the Cura slicer on Linux. The result looks amazing, the lettering is good and the overall quality looks great. I will have to install the.22 cal barrel back in my Escape UL to do some testing in the near future. The Escape currently has a Donny FL Tanto, so will be interesting to compare the two. Also look forward to trying the .25 cal version when available. Thank you again for sharing your expertise and experiences with these builds.

One quick question, have the designs been tested with more powerful airguns like the Escape UL? I will not be able to print with resin, but I will soon have some PETG to play with. Not sure how well the PLA version will hold up, but it was great for learning more about 3D printing.

[OldCrow]

Mike, I am a complete newby to 3D printing, but decided to try your .22 version last night as a learning experience. The print was done with .12 layer height PLA with a 50% infill using the Cura slicer on Linux. The result looks amazing, the lettering is good and the overall quality looks great. I will have to install the.22 cal barrel back in my Escape UL to do some testing in the near future. The Escape currently has a Donny FL Tanto, so will be interesting to compare the two. Also look forward to trying the .25 cal version when available. Thank you again for sharing your expertise and experiences with these builds.

One quick question, have the designs been tested with more powerful airguns like the Escape UL? I will not be able to print with resin, but I will soon have some PETG to play with. Not sure how well the PLA version will hold up, but it was great for learning more about 3D printing.

Good to hear!

I believe these designs should perform well up to about 50+ fpe in 25 cal.  40+ fpe in 22 cal. and 30+ fpe in 177 cal.  If you are worried about strength you can sand them down enough to fit the appropriate carbon fiber tube and that should strengthen them significantly.  I draw them so that you can order a tube from Ebay and sand them down (a bit) then epoxy on a CF tube.

I doubt that the internals on any of them will handle 80 fpe.  They might but I'd not count on it.  Putting that kind of pressure in one without gluing a CF tube around it would be asking for trouble.  With the tube you will atleast know which direction the fragments will be going.          YMMV... I wouldn't try it and if I did I wouldn't let anyone stand anywhere near while I did it.

[smythsg]

Mike, thanks for the updated information, and of course the wise warnings. I usually have my Airforce Escape UL tuned to shoot ~60 ft lbs with the .25 barrel and about ~43 ft lbs with my .22 barrel. That rifle is the only one I have to test with, but I would tune it down in .22 to somewhere around 30 fpe to start.

[OldCrow]

Mike, thanks for the updated information, and of course the wise warnings. I usually have my Airforce Escape UL tuned to shoot ~60 ft lbs with the .25 barrel and about ~43 ft lbs with my .22 barrel. That rifle is the only one I have to test with, but I would tune it down in .22 to somewhere around 30 fpe to start.

No worries, keep us posted.  I'd like to hear about your observations.  The reason I am not more specific is because I recently (a couple months ago) made some changes to lighten up the designs and they haven't been tested to failure since that time.  Hopefully my assertions are not too far off the mark.  We were shooting a different resin than the one I use now at close to 100 fpe in 25 cal last year... but that was a different resin AND a heavier design.

Another thing you'll likely find a PETG moderator fitted inside a CF tube of the correct diameter will surprise you on just what it can take.  That 22 Standard is a 30mm tube outside diameter so a piece of 32mm x 30mm x 120mm would be perfect to support that moderator in a more powerful gun.

Here is a draft of the PDF I'm working on for the upload to the site later this month.

[smythsg]

Well done good sir, and again, thank you for sharing your story and your perseverance. The weather is suppose to be nice tomorrow so I should get some testing done with the .22 standard. 3D printing seems to be somewhat of an art and I am early in the learning cycle. I did not try to do anything in the print to insure the most strength, am just learning more about walls and infill, etc so will try to be conservative with the early testing.

[OldCrow]

I've started adding the files for the 17 and 25 calibers as well.  There is still quite a bit of work to do before this project is finished but I've made a pretty good start.

There will be questions.  Ask them here.  I  have used multiple resins and multiple filaments to print all of these designs.  I can probably answer any question off the top of my head.  I'll keep the thread up to date. 

Latest Draft PDF is attached:

[OldCrow]

Updated files at Thingiverse.

Ember is 30mm x 100mm about 95 CC.  Nice package.  Good performance in a small package.
This one is the "root" moderator in the two baffle series.

Good shooting.

[CK]

OldCrow,

Thank you for sharing your designs!  I read your white paper and I can only imagine what an undertaking it was to draw them and test them.  I really enjoy 3D printing and how it can let us enthusiasts prototype things to experiment with.

Thanks again,
Chris

[OldCrow]

OldCrow,

Thank you for sharing your designs!  I read your white paper and I can only imagine what an undertaking it was to draw them and test them.  I really enjoy 3D printing and how it can let us enthusiasts prototype things to experiment with.

Thanks again,
Chris

Thank you for your kind words.  The shooters are the ones who did the heavy lifting.  They've shot tens of thousands of pellets in testing.

There are ten actual designs which are part of this study.  Today as I write this I see I have uploaded six of them to thingiverse. 

I am about half way to getting that PDF and the uploads done.

Regards
Mike