Ring time biker STL 3d model for 3d printing 3D print model
Ring of the time biker STL 3d model for 3d printing 3D print model
Ring Model is fully ready for 3d printing of plastic, metal or jewelry wax and CNC!
Ring of the time biker STL 3d model for 3d printing.
Recommended material – oxidized silver.
Size – 18 mm.
silver 925 Sterling – 13.3 grams.
Other sizes and format can be fabricated – it’s FREE, just let me know what size you want by using the contact designer button on the right.
Any questions? Please contact me.
Category: 3D Print Models
Premium & 3D Print models ready to be 3d printed. 3D Print Models and Free 3D Print Models are available for download in several formats including .STL, .3DM, .OBJ, .3DS, .DAE, .SKP, .BLEND, .DWG, .DXF, .STEP and much more. If you’re in search of high-quality 3D printed assets, we have a huge library of 3d print models for any of your needs. Also you can visit 3D Models and All 3D Models category.
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Ring biker 001 3D Model
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Meditating frog 3D Print Model
Meditating frog statue. Based on pictures I found online, could say it’s a replica, but nothing is scanned. Sculpted in 3D-Coat.
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Replica of an officer’s signet ring of the Roman legion 3D Print Model
Ring of a soldier (RGZM, Mainz) XXII Legion: Legio XXII Primigenia: one of the Roman legions. The surname Primigenia is one of the titles of the goddess Fortuna. Caligulan Period
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Volcano Ash From Mount St. Helens! 3D Print Model
Summary
I made this because I thought it would be awesome to hold a ash particle!Custom Section
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Delta ipad rack 3D Print Model
Summary
A stable ipad rack for your versatile using.
Print Settings
Printer:
PING 3D printer Rafts:
Doesn’t Matter Supports:
Yes Resolution:
0.3 Infill:
5% -

iPhone Mount For a Microscope! 3D Print Model
Summary
I made this mount so I could look at a screen instead of a little hole in a eyepiece. This is the fixed version. Hope you fun with it! I know I did!Custom Section
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Lid for Controller of RC toy 3D Print Model
Summary
This hinge of the lid broke very easily.
I made a repair parts. Hinge is reinforced.
If you have a same Propo (Controller) it will works ^_^
I know that so many people do not need this parts .
Print Settings
Rafts:
No Supports:
No -

Anet A8 filament guide 3D Print Model
Summary
This simple filament guide screws into your extruder carriage and ensures that the filament is pulled directly straight down into the extruder. -

Kolovrat Kolyadnik Ladinets Slavic pendant amulet 3D Model
Kolovrat Kolyadnik (Ladinets)
Slavic pendant amulet of sun
Chain: not included
Height: 34mm (1.34″)
Width: 26mm (1″)
Thickness: 2mm (0.08″)
Weight:
925 silver – 12g
14k gold – 15g
Steel – 9g
From Russia with peace and love!
A.Ovchinnikov -

hand spinner 3D Print Model
A classic hand spinner on the photo with 4 bearing 608 and the other with 1 bearing 608 and 3 nut M10 file slt: – classic – with nut M10 – with nut M12
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bouchon hand spinner 3D Print Model
A plug for hand spinner to replace the bearing 608 outdoors with an M8 nut inside
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Little Feet for Portable Computer & More! 3D Print Model
These feet were created to support your computer and avoid overheating but you can see they have more than one specific use! They are too cute you will want to print thousands of them! We recommend you to fix them with some soft glue (such as double tape) to improve their use.
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Thomas the Tank Engine – Thomas & Friends 3D Print Model
This is the end result of my journey of making a miniature model of one of my 3D models. Bulgy from Thomas & Friends. Please take a look at my “Making of..” video:
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Ring flower Unic design 3D Model
The ring size is 18mm
The metal weight is 7.gram.(14k/yellow gold)
This ring had been printed 2 times for my customers 2 times -

LinkBelt for flexible filament 3D Print Model
Summary
Link belt for v drive pulleys
Printing in Sainsmart flexible filament, but I’m sure many filaments would work well.
I don’t know how these will hold up over time, but should be good in a pinch.
The default size is 20mm at its widest point, and 4mm thick. Scale as needed.
I would suggest at least 25% infill. -

Lilypad Flower 3D Print Model
Summary
A lily flower, typically go close to lily pads.
Print Settings
Printer Brand:
Ultimaker Printer:
Ultimaker 3 Extended Rafts:
Yes Supports:
No Resolution:
0.06mm Notes:
Print in yellow and white. I suggest pearl white. -

Orange pi2 pc case 3D Print Model
Summary
Fixed an issue where the fan and the hdmi connector interfere. -

Side Storage Box for 20mm Rail 3D Print Model
Summary
This is a storage box to keep things organized. It attaches to 20mm extruded rails using M5 x 8mm machine screws and T-nuts. There are half height dividers to keep things separated and a slot for a razor blade. I’m using this on a Hictop 3D printer, but it should work on anything with 20mm rails.
Print Settings
Printer Brand:
Prusa Printer:
Prusa Clone Rafts:
Doesn’t Matter Supports:
Yes Resolution:
.1mm Infill:
100% Notes:
I printed this in PLA at .1mm with 100% infill, but as low as .2mm with 20% infill should work fine. -

3 way 1/2 in PVC internal corner connector 3D Print Model
Summary
After attempting other parts on here which (IMHO) consumed excessive time and plastic, I made this. Intended for a cheap 3D printer enclosure to connect PVC pipes at the corners of the framework. 1 connector prints in around 35 minutes and uses only 6g of plastic. Use good bed adhesion and you should be fine to print.
Print Settings
Rafts:
No Supports:
No Notes:
Small contact area with the build plate. I recommend a raft or good brim unless you use strong bed adhesives. -

CUP 3D Print Model
Summary
The cup has groove for easy use
or can be a pot of plants
with personal preference to use
Print Settings
Printer:
ATOM 2.5EX Rafts:
No Supports:
No Infill:
16.5% -

Bed Level Tester 3D Print Model
Summary
This is a tiny bed-level tester that I designed. I place one in each corner of my bed and one in the center, but this can be changed if appropriate for your needs.
This 20mm disk has segments that are one, two, or three layers thick. There is a sloped section in the middle with a hole. It is designed to be easily removed without damaging the thin parts. and for inspection of the first few layers.
I use a Monoprice Select Mini printer, so I originally designed it using the “Magic Number” layer heights. File “Bed_Test0.2625-_0.175.stl” is meant to be sliced with a first layer height of 0.2625mm, and remaining layers of 0.172mm.
I have also provided versions for 0.1mm (“Bed_Test_0.1.stl”) and 0.2mm (“Bed_Test_0.1.stl”) layer heights, as these seem common for most other printers. I have not personally printed them, but if you priter is capable they should work.
Print Settings
Printer:
Monoprice Select Mini Rafts:
No Supports:
No Resolution:
See Notes Infill:
100% -

Shelf shelf 3D Print Model
Structure for a top shelf for tubular bunk bed in diameter of 20mm with a width of 125mm with a thickness of 16, length to good will.
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Adjustment button Transfo MECCANO 3D Print Model
Adjustment button MECCANO Transformer with 115 V plugs for Hornby “O” trains
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penholder 3D Print Model
The shape says everything … pen holder is a form of what it is supposed to contain. Gift idea or nice accessory to keep home.
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PERSONALIZED PENCIL HOLDER IBARAKEL 3D Print Model
“Our approach of consultancy and expertise can be divided into three essential stages: Analysis of existing solutions Development of solutions and recommendations Accompaniment of the realization” ADD YOUR TEXT ON WWW.IBARAKEL.COM
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Lowpoly Bird house strong 3D Print Model
Two parts for this new Bird House Lowpoly.
The attention was particularly related to the trickness of the 3D model.
15 cm high. -

Simple Planter 3D Print Model
Summary
This is a simple planter for indoor or outdoor use.
Print Settings
Printer:
Monoprice 13860 Maker Select Rafts:
Yes Supports:
No Resolution:
0.1mm Infill:
20% -

Airsoft Surefire 556 Supressor 3D Print Model
Summary
Mock supressor for 14mm CCW airsoft guns. Loosely based on the Surefire products.
I’m by no means affiliated, nor endorsed by them.
This file may not be sold, nor printed for sale. All responsability goes to the end user. -

spacer for spool holder 3D Print Model
Summary
can hold spools from Ø + – 60 to 80
Print Settings
Supports:
No Resolution:
0.2 /0.1 Infill:
20 – 25% -

Fidget spinner Lightyear cars 3D Print Model
Summary
Spinner Cars mcqueen,
dimensions are set for my printers, if your have assembly difficulties please contact me, I will adjust it
Print Settings
Printer Brand:
FlashForge Printer:
Dreamer Rafts:
No Supports:
Yes Resolution:
1.5 Infill:
40% Notes:
lettres are printed on a delta with 0.2 mm hot end
All parts are ABS
How I Designed This
design with fusion 360 -

Pipe plug 3D Print Model
Summary
A pipe-end plug designed to wedge into the pipe interior. A 1/4″ (6 mm) hex-head bolt is used to pull the opposing wedges into each other. I’m using this to protect a tarp which is placed over the pipe-end. Would a cap be better and simpler? I don’t think so, this tarp has been exposed to 70 mph (112 km/h) winds.
I’m sure that there are other uses.
cap and wedge .stl files provided for 25 mm ID pipe. Edit the .scad for other diameters. Someday I might make a customizer.
Print Settings
Printer Brand:
LulzBot Printer:
Mini Rafts:
Yes Supports:
No Notes:
Mushroom head and width/height ratio mean that a brim is advisable. -

BEARING BEARING 08-24-07 mm 3D Print Model
Bearing inside diameter 8mm outside diameter 24mm height 7mm number of ball 10 Best regards
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Logan Utah LDS Temple 3D Print Model
Summary
3D Model of the Logan, Utah LDS Temple. Check out my other temple models on my page! I’m a full-time student, so I don’t have tons of time to work on these, however I’m open to requests! I love to hear from you guys!
Printing at smaller sizes makes it hard for a lot of the fine details to show up and can cause problems for the small details at the top. I would recommend printing as a minimum size, 70mm on the z axis and as a recommended size of 90mm on the z axis.
As a side note unrelated to printing, story time. I showed up with this as a wedding gift for a good friend of mine and his mom ended up totally loving it. She had to go and start moving stuff around on the cake and stuck this on top as the centerpiece of the wedding cake. We were at a park within view of the temple and it was actually kinda legit. -

Spinner Single 3D Print Model
Summary
So I Decided to hop on the spinner bandwagon and designed this single spinner in SolidWorks.
Print Settings
Printer:
MP Select Mini 3D Printer Rafts:
No Supports:
No Resolution:
0.175 Infill:
100% -

Prusa i3 Screw Mount Nozzle Hictop & Anet A8 Nozzle 3D Print Model
Summary
Screw mount cooling nozzle, a more permanent solution than the commonly available one which sticks into the fan using friction (which cracked my fan nose).
enjoy!
3dcalgary -

3 Bearing Fidget Spinner 3D Print Model
Summary
This is a cool spin on the Fidget Spinner (pun intended). Assemble by placing bearings on one side of the plate, then put the other plate on. Then insert each side of the posts in.
Print Settings
Printer:
Monoprice Select Mini Rafts:
No Supports:
No Resolution:
Whatever the medium is for your printer Infill:
50% or more Notes:
Usually prints in like 1.5 hours.
How I Designed This
I saw a trefoil knot and figured I could apply the general shape to a fidget spinner. I also wanted to make a spinner that had 3 lobes but only used 3 bearings. I did all of this in a gear-y kinda way. The bearings will counter rotate to the direction of the plates. Something I didn’t think about when designing this was the size of it. I may make a larger version, but the center post will have to be accordingly larger. -

Rafale Aircraft 3D Print Model
Model for exhibition of the French Rafale. I am not responsible for a bad impression.
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Crohy Tower 3D Print Model
This is a model of the tower at Maghery Crohy Tower, I made it for a fish tank, but can be used for anything.
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MylovedPitBull 3D Model
Download Model PitbullArt OBJ STL WRL and one texture file
i think you dont need suport for this model just be sure to oriented to your printer type.
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Pencil Clip 3D Print Model
Summary
I designed a pencil clip. This is designed to clip onto your backpack so you can easily clip your pencils onto it. I made it because I am sick and tired of always digging through my backpack for a pencil and it makes it easier for me to reach it.
I created this thing for people who have organizational issues. I frequently find myself without a pencil and can’t keep track of them, so I made this so it is easier for me to keep track of my pencils. This could work for pens also. -

Harry Potter Drink Coasters 3D Print Model
Summary
Harry Potter Drink Coasters! I’ve also included 3 vertical stands. One for 3.5mm material and one for 7.1mm material, which happen to be the most common thicknesses of wood I buy. If you’re using another thickness just pick the closes one to yours and modify it. Enlarge or shrink the holes and adjust the length of the tabs on the support pieces. Also be careful that the coasters will fit in the slots made for them. The slots should accommodate a coaster of the given thickness plus an additional 1.5mm cork backer if you choose to use them.
This was made in Corel Draw X7 and I’ve also included a PDF. -

VESC 4 Case 3D Print Model
Summary
This is a case for the VESC 4 for electric skateboards. There are hole to mount to the deck and standoffs that match the standard VESC platform
VESC BLDC Speed Controllerhttp://diyelectricskateboard.com/diy-electric-skateboard-kits-parts/vesc-the-best-electric-skateboard-esc/ -

Base de escritorio moto g4 / g4 plus y otros celulares de hasta 9mm de espesor 3D Print Model
Summary
Desktop base for the moto g4 / moto g4 Plus and other cell phones up to 9mm thick.
Base de escritorio para el moto g4 / moto g4 más y otros celulares de hasta 9mm de espesor. -

Flying Carpet 3D Print Model
A fun fair attraction in you is possible! The Flying Carpet, a classic of fairs 🙂
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Hand spinner By hipkiss974 3D Print Model
Hello here is a hand spinner intended for ball bearings of scooters, rollers. No need for glue to fix the bearings, dimensions are provided for the bearings to fit in the inserts. You just have to print it 🙂 enjoy !!!!!
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Skull 3D Print Model
a skull I sculpted to practice anatomy and face proportions. Its not 100 anatomically correct but its a good likeness.The jaw is attached to the skull making it easier to print.
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Lego Technics Moon Rover Hub and Tire 3D Print Model
Summary
The hub is printed in black ABS, and the tire in Sainsmart blue TPU. Roughly equivalent to Ninjatech’s Semiflex.
Tires slip fit nice and tight on hubs, a dab of superglue would make them permanent if you want.
Sketchup file included incase it’s helpful! -

Two Color Typing Champ Keychain 3D Print Model
Summary
A 2017 Typing Reward Keychain. 2 Color and single color available. Simple and fast to print.
Print Settings
Printer Brand:
FlashForge Printer:
Creator Pro Rafts:
No Supports:
No Resolution:
.2mm Infill:
20%
Post-Printing
Simply add a keychain after printing.
How I Designed This
Tinkercad -

2040 Extrusion Leg 3D Print Model
Summary
There are two files the first is a pair of legs that will work well on 20x40mm extrusion with a length from the bottom of the extrusion of 40mm. If you don’t want to print sets or two (left and right) just print the Universal leg which can be reversed and used on any corner. -

Senate Guard Helmet (Star Wars) 3D Print Model
Summary
This is the Senate Guard Helmet from Revenge of the Sith.
I hope I’m getting better at sizing these helmets. This “should” fit an adult male head. Please check the pdf for measurements. The units are in millimeters. If you do print this out before me please let me know what scale fit your head. -

10mm Smooth Rod with T8 Leadscrew Version of Blackrocks X-Carriage 3D Print Model
Summary
Im on a mission to eliminate z banding, so 10mm smooth rods and Leadscrews is the goal.
Once im finished with the design will upload solidworks files.
I know there was a request for a 10mm version quite some time ago, and if there are anymore requests now is the time 😀 -

Calibration Steps 3D Print Model
Summary
A simple calibration test made in Solid works.
Long sides are 20mm, short sides are 10mm and the middle square height is 15mm (just for fun). This way you have a few different lengths to test your printer calibration while using less filament then printing a 20mm cube. -

Grinder Holder Ø 41,5mm 3D Print Model
Summary
Just a simple holder for a Grinder with a size of Ø 41,5mm. -

Little cute marble spinner 3D Print Model
Summary
Un petit spinner que j’ai crée pour ne pas avoir à utiliser les roulements à billes comme contre poids. Il en existe plusieurs de ce type, mais je voulais un spinner qui permettent à la fois une introduction facile des billes et qui les empêchent vraiment de sortir du fidget lors de la rotation. A moins de jeter le spinner par terre. Les billes resteront en place.
J’ai crée aussi ce petit cap afin qu’il permette de voir le roulement à billes… parce que c’est cool de les voir tourner.
A small spinner that I created for not having to use the ball bearings as counterweight. There are several of these, but I wanted a spinner that allow both an easy introduction of the marbles and that really prevent them from getting out of the fidget when rotated. Unless throw the spinner on the floor. Marbles will remain in place.
I also created this little cap that it allows to see the ball bearing … because it’s cool to see them turn.
Print Settings
Rafts:
No Supports:
No Resolution:
0,1 to 0,2 Infill:
25 % for the spinner 50% for the cap Notes:
Les roulements à billes peuvent être chers et difficiles à trouver.
Voici un petit spinner qui fonctionne avec des billes. Il est prévu pour un roulement à billes 608. Vous pouvez utiliser des billes classiques de 15 à 16,5 mm environ.
Pour insérer les billes, posez les du coté du chanfrein à l’emplacement prévu à cet effet. Une petite pression de la bille avec le pouce sur son emplacement suffira à l’enfoncer. Vous entendrez un “clic” qui signifiera qu’elle est bien enfoncée. Les billes tiennent tres bien dans leurs orifices, n’ayez pas peur de tourner votre spinner donc. Si toutefois les billes avaient tendances à partir, changer de calibre pour ces dernières ou rajouter un point de super glue à leur base.
Veillez à bien choisir les billes que vous mettrez dans le spinner, elles doivent avoir sensiblement le même poids.
Si vous voyez un trop gros déséquilibre lorsque vous faites tourner le spinner, tenez le verticalement entre vos doigts et laissez le bougez tout seul. Si il ne tourne pas du tout, c’est que le roulement est peut être désaxé. Si il tourne doucement et s’arrête, recommencez en mettant la bille qui se trouvait en bas après l’arrêt de la rotation de l’autre côté du spinner. Si le spinner se remet à tourner et que la même bille se retrouve à nouveau en bas; c’est qu’elle est trop lourde. Changez là et recommencez l’opération jusqu’à ce que vous obteniez une rotation stable.
Si le modèle apparait à la verticale dans le slicer, tournez le de maniere à ce qu’il soit à plat. Vous n’aurez pas besoin de raft ou de supports.
Have fun.
Ball bearings can be expensive and hard to find.
Here is a small spinner that works with marbles. It’s designed for a ball bearing 608. You can use conventional marbles of about 15 to 16.5 mm.
To insert marbles, a small pressure of the marble with the thumb in its position will be enough to push it. You will hear a “click” that will mean it’s pressed down. The marbles hold very well in their holes, do not be afraid to turn your spinner therefore. If, however, the balls had a tendency to go out, change their caliber for the latter or add a point of glue to their base.
Be sure to choose marbles you want to be in the spinner, they must have substantially the same weight.
If you see too much imbalance when you spin the spinner, hold it vertically between your fingers and let it move by itself. If it does not rotate at all, it is that the bearing is may be off-axis. If it turns gently and stops, start again by putting the marble which was at the bottom after the rotation of the other side of the spinner stopped. If the spinner starts to rotate again and the same marble is again at the bottom; Is that it is too heavy. Change it there and repeat the operation until you get a stable rotation.
If the model appears vertically in the slicer, turn it so that it is flat. Then you will not need raft or supports.
Have fun. -

MakerFaireInWallonia 3D Print Model
Summary
Maker faire goodies inspired by the the Maker faire in wallonia logo!
(Logo designed by N-Zone) -

Pendant Slavic Axe 3D Model
Slavic Axe 3D print model
Model “Slavic Axe” Double SIDES!!!! Its not 2 models! Its one model with 2 sides!
Size: Look images (on mm);
Weight: 9.73 (silver 925);
Recommended material: Silver, Platinum.
Ready to print or cutting on CNC machines.
How open “STL” format:
File -> Import -> *.STL
All Printable or 3D programms work with stl formats.
How open STL in Zbrush:
Plugins -> 3D print -> STL import. -

Pendant Angel 3D Model
Angel 3D print model
Model : Angel
Size: Look Images Preview ;
Weight: ~ 1.6 gr. ;
Recommended materials: Silver, White Gold ;
Format: STL.
Printable
Ready to print or cutting on CNC Machine.
How open “STL” format:
File -> Import -> *.STL
All Printable or 3D programms work with stl formats.
How open STL in Zbrush:
Plugins -> 3D print -> STL import. -

Luxury Fasion Ring FR01 3D Model
Luxury Fasion Ring FR01 3D print model
Luxury Fasion Ring FR01
Model: FR01
Size: Look Images (mm)
Gems: 1.75mm x 6 pcs.
Weight: Silver 925 ~ 6,43 gr
White Gold ~ 7.83 gr.
Platinum ~ 12.4 gr.
Recommended Materials: Silver, White Gold, Platinum
Ready to print or cutting on CNC machine
How open “STL” format:
File -> Import -> *.STL
All Printable or 3D programms work with stl formats.
How open STL in Zbrush:
Plugins -> 3D print -> STL import. -

Cross CR01 3D Model
Cross CR01 3D print model
Ring : “Cross”
Size: look on images
Formal: STL
Recommended material: Silver, Platinum
How open “STL” format:
File -> Import -> *.STL
All Printable or 3D programms work with stl formats.
How open STL in Zbrush:
Plugins -> 3D print -> STL import. -

Roulette emporte pièce LEGO 3D Print Model
Roulette pour faire des formes de Lego carré sur de la pâte d’amande, gâteaux, pâte à modeler …
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Hammerhead 3 Position Whatever Holder 3D Print Model
This is a wall or shelf-mounted holder for headphones, controllers, what have you. Designed to be used with indoor mounting tape, the design can get a little too slippery against the surface if used without it.
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PLP Elwood le Carlin… 3D Print Model
Retrouver sur YouTube mes aventures en B.D.
” Elwood le Carlin ” → ( Le Chef de toute une tribu… ) -

Andy Capp 3D Model
Andy Capp action figure. ready to print.
one big file, or more file to print and assembly. -

LION MASCOT PEUGEOT M Marx 1925 3D Model
1925 PEUGEOT LION CAR MASCOT – HOOD ORNAMENT by M.MARX
roaring lion sculptor Marx 1925. Is set as an ornament on the radiator caps in 1925-1933 -

Rolls Royce Spirit of Ecstasy hood ornament 3D Model
Rolls Royce Spirit of Ecstasy hood ornament 3D print model
the model kit includes a stand for neodymium magnet 20-4mm, 25-4mm with a countersink for 6.5*3.5 mm
the thickness of the magnet can be varied up to 10mm
link to a sample magnet
https://magnit23.com/market/magnitnye_kolcza/kol_co_20_6_5_3_5_4 -

Illinois License Plate 3D Print Model
Summary
A small Illinois License plate for school state float project.
Print Settings
Printer:
Geeetech i3 pro c Rafts:
No Supports:
No Infill:
30%
How I Designed This
Fusion360. Looked at pictures of Illinois license plates and recreated.
Downloaded TTF (true type font) for license plate text, put in the windows font folder and printed the text in Fusion360.
This is designed for dual extruder. If you have a single extruder you can still combine the files and paint the text by hand. -

Yondu’s arrow 3D Print Model
Summary
Not made to canon, made how I thought looked cool. I am currently working on slicing it into parts, as it is 16 inches long. -

Parkzone UMX P-51 display stand 3D Print Model
Summary
Just a nice little stand for the Parkzone umx P-51D 🙂 Prints In about 4-5 hours
Print Settings
Printer:
Anet A8 Rafts:
No Supports:
No Resolution:
.2mm-.3mm Infill:
20% -

3mm/5mm Z-Axis Shim for Flashforge Creator Pro Glass Bed 3D Print Model
Summary
3mm/5mm Z-Axis Shim for Flashforge Creator Pro Glass Bed -

Lego Quetzalcoatl 3D Print Model
Summary
A Lego feathered serpent. It’s not great, but hey, 10 minutes aint bad. I’ll likely be editing this a good bit. -

RUBBER DUCK 3D Model
DEATH PROOF CONVOY RUBBER DUCK HOOD ORNAMENT CAR MASCOT RAT ROD HOT ROD TRUCKERS
the model kit includes a stand for neodymium magnet 20-4mm, 25-4mm with a countersink for 6.5*3.5 mm
the thickness of the magnet can be varied up to 10mm
link to a sample magnet
https://magnit23.com/market/magnitnye_kolcza/kol_co_20_6_5_3_5_4




























