3D Printing What Are You Printing Today?

slohand said:

Have a roll of TPU that I purchased for another project and thought I'd give it a go to make disposable ejection end caps. After a few adjustments on size, I got them fitting nicely. Way better than tape.

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If you print your chargewells, you can retain the ejection with a 0.4mm thick disk that is just slightly larger than the id of the charge well. (by about .007"-.010" I made these in tinkercad and used a 16 sided polygon shape. the corners wedge into the grooves on the chargewells.. . (Print them with .28mm layer height, 1/8" -3/16" walls with 100% infill. PLA. They will last longer than you think and are cheap to make more...) Although tape is what holds everything together...lol

Parts for the rebuild of my MPR/LPR electronic staged Nike Cajun, the last flight destroyed a everything forward of the fin can on the booster, this time around I made the bay and ISC from 3D printed parts. Still need to install the eyebolt and install a MWC Screw switch (as soon as I get more). The booster came in ballistic from 800', destroying the previous Eggtimer Quantum, and bending the original all aluminum sled (1/8") and #8 all-thread rods (which are reused here). The rawl/rubber expansion nut inside the ISC is for the igniter for the upper stage. Airframe tubing is T188 from Balsa Machining Service.

beeblebrox said:

If you print your chargewells, you can retain the ejection with a 0.4mm thick disk that is just slightly larger than the id of the charge well. (by about .007"-.010" I made these in tinkercad and used a 16 sided polygon shape. the corners wedge into the grooves on the chargewells.. . (Print them with .28mm layer height, 1/8" -3/16" walls with 100% infill. PLA. They will last longer than you think and are cheap to make more...) Although tape is what holds everything together...lol

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Thanks Beeblebrox, Sounds like a plan.

slohand said:

Thanks Beeblebrox, Sounds like a plan.

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.....Ooooops, forgot one (two) small detail(s), print the chargewells with a small hole in the side that just fits igniter wires (Below where the thin disc will sit) and a bigger hole in the bottom for a screw to mount it...DOH!

Made a case for my Eggfinder. Did not like any of the designs I had seen and the case that came with it is large and difficult to cut out easily, (That will make a great project box for something else, thinking multi use battery charger.) The biggest problem with the Eggfinder is the antenna is mounted directly to the board, not good if you drop it on the antenna. This design uses a short cable with a chassis mount.

https://www.thingiverse.com/thing:4242998/

Face Shields! We've donated 88 face shields to date and continue to produce them. If you have a printer, you can help!

I even made the news! https://www.news10.com/video/local-man-3d-printing-masks-for-medical-professionals/4428299/

For more information: https://www.prusaprinters.org/prints/25857-prusa-protective-face-shield-rc2/comments

After two days of struggling to get PETG to print I finally got some okay and serviceable prints....by doing the opposite of what all the expert websites suggested...lowered the bed temp to 50C instead of the recommended 80C, turned the part cooling fan almost entirely off (10% vs the recommended 20-30%), and turned the hot end temp up a hair from 240C to 245C. Go figure...

I find my settings change for every manufacture of filament. Have printed 4 face shields and 4 masks to support my local drive here directed by Queen's University.

jnmiller said:

Masks for those on the front lines... they are sent to a clinic that adds fabric and elastic and then are sent to where they are needed.
https://longliveyoursmile.com/3d-printable-mask-for-covid-19/View attachment 410192

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Just finished a 29mm 6:1 ratio nose cone for a hand rolled carbon fiber tube, printed vase style with 2mm walls from PETG.

I’m printing the coronavirus spike protein because....why not?

It came out pretty well—on both the FDM and SLA printers.

BDB said:

It came out pretty well—on both the FDM and SLA printers. View attachment 411371View attachment 411372

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What is it and how do you get it out of the supports.....

I got a little stringing, but for this print I am going to pretend it was deliberate. About 12 hours to go on the base.

rharshberger said:

What is it and how do you get it out of the supports.....

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It’s the spike protein of the coronavirus that causes Covid-19. You can find the files here. I only printed the surface structure of the protein because the actual alpha helices and beta sheets (the image on my Mac) would have been a support nightmare.

The gray one was printed on and Ender 5 with PLA, and the supports were a disaster. Honestly, I’m only showing the good side in the pic with my Mac.

The bluish one was printed on my Anycubic Photon. The supports came off pretty easily by hand and a little pruning with some small clippers.

BDB said:

It’s the spike protein of the coronavirus that causes Covid-19. You can find the files here. I only printed the surface structure of the protein because the actual alpha helices and beta sheets (the image on my Mac) would have been a support nightmare.

The gray one was printed on and Ender 5 with PLA, and the supports were a disaster. Honestly, I’m only showing the good side in the pic with my Mac.

The bluish one was printed on my Anycubic Photon. The supports came off pretty easily by hand and a little pruning with some small clippers.
View attachment 411416

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I had kinda guessed thats what it might be, however the grey one looks like some of my early attempts to print PETG.

Heres my projects for the last couple of days, they are PETG rings/spiders for glassing/carbon fiber sleeving 4" Loc airframes. The one laying flat is used only on the end, the one standing on edge is used between two sections of airframe to sleeve both at once, the larger one took 37 hours to print and the other 26 hours. I still need to print one more of the end units and am using the last part of my roll of PETG to print the much thinner center of the tube supports (they look similar, only 1/2" thick and no lip to seat on edge of tube), I have just enough left on the roll to print 2 of the center supports. The last end piece will have to wait until the 24th or so as thats when Amazon says my next roll of PETG will ship. I do have a roll of Amazon Basics PLA arriving this weekend supposedly so I could print it with that since its not really a part requiring a lot of strength. The spiders fit over a axle of 1" EMT conduit, finally going to get started on the SBR/Fusion THOR I won at SodBlaster 2019.

Surgical mask relief strap
https://www.thingiverse.com/thing:4...imO7LGnlXyKB5DvYYLFRZ27Yrs_IVxZPG_XgkkyOMf424

More Saturn V parts. Take a look at this one. All was perfect until I had to do a filament change. I got these lines in the print. Stopped it, replace spool with another new one, changed nozzle and am starting over again.Was only a day and a half into the print. Anyone have any ideas on what may have caused this?

What material are you printing with? PLA, PETG, ABS? Do you use an enclosure for your printer? These look like temperature swings to me but I'm no expert. I work in a basement workshop that is cold in the winter. I've had some prints start doing this type of thing if I open and close my enclosure during the print. I've learnt to try and ensure that I'm not fluctuating the entire range of print temperatures, bed, noozle and ambient temperature inside the printer enclosure.

Okay, you guys are prompting me to get off my duff and finish putting together my Tevo Tarantula. I know it's not the greatest 3D printer out there, but I've got some mods to immediately print to help improve it. I just have to finish assembling.

Hi folks, I'm fairly new to printing rocket parts (and the forum) but I found some models on Thingiverse I just have to build. So, I am working on a Saturn V that was printed in ABS and a Heavy Falcon that I am working on printed out of PLA.


The Saturn V has one 24mm motor mount.

The falcon will have one 24mm mount and 2 18mm mounts, which I may not use. Unfortunately, it will need some clear fins before it will be safe to fly.

slohand said:

What material are you printing with? PLA, PETG, ABS? Do you use an enclosure for your printer? These look like temperature swings to me but I'm no expert. I work in a basement workshop that is cold in the winter. I've had some prints start doing this type of thing if I open and close my enclosure during the print. I've learnt to try and ensure that I'm not fluctuating the entire range of print temperatures, bed, noozle and ambient temperature inside the printer enclosure.

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Ender 5 Pro, Atomic PLA,no enclosure, 200 c nozzle, 60c bed, .4 tip.

Sauder said:

Hi folks, I'm fairly new to printing rocket parts (and the forum) but I found some models on Thingiverse I just have to build. So, I am working on a Saturn V that was printed in ABS and a Heavy Falcon that I am working on printed out of PLA.
View attachment 411513 View attachment 411514

The Saturn V has one 24mm motor mount.

The falcon will have one 24mm mount and 2 18mm mounts, which I may not use. Unfortunately, it will need some clear fins before it will be safe to fly.

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Sauder, I have printed off Thingiverse also. Can You send a link to the Saturn V you just posted? Thanks.

David Schwantz said:

Ender 5 Pro, Atomic PLA,no enclosure, 200 c nozzle, 60c bed, .4 tip.

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David, you may want to print a temperature tower such as this https://www.thingiverse.com/thing:2493504

200C may be a little low for PLA but with a temp tower test you'll be able to dial it in.

Never done that Have some new stuff coming today. Pro PLA from 3D Fuel out of Fargo, ND.
Your Saturn looks great by the way. I did a 24mmt one. But I scaled it down from the 52nd scale one that I am printing. It did not come out as nice as yours. The first couple of sections were great, then it would not print the ribs on the surface. Was like it drop them from the file. Could recover them. Reprinting parts from the big one, and all is great. Don't know why it lost them on the smaller version.

David Schwantz said:

Ender 5 Pro, Atomic PLA,no enclosure, 200 c nozzle, 60c bed, .4 tip.


Sauder, I have printed off Thingiverse also. Can You send a link to the Saturn V you just posted? Thanks.

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Hi David, here is the link for the Saturn V:

https://www.thingiverse.com/thing:3192548

Here is the link for the Heavy Falcon:

https://www.thingiverse.com/thing:3212440

I had help with the Saturn V, but I broke the top and had to reprint with PLA. I'm thinking I may have to redesign the top piece to remove for launches.

Thanks!

I have my LES removable as I am sure it would not survive. I also glassed a fiberglass tube in the CSM for strength. It is tied into everything below which all has CRs and LOC tubes inside.

My daughter 3d printed a spacex BFR for a 98mm body tube, and a 54mm motor.

Original files are here: https://www.thingiverse.com/thing:3858935

Apparently Hobby King has Esun PLA on special currently. Might be worth a look .
https://hobbyking.com/en_us/workben...Workbench /// 3D Printing /// Filament&is_v=1

Still working on the Heavy Falcon but I wanted to try another model I was working on. This is the lower end of the Estes Pegasus. I'm planning to print the rest today.