SIERRA720
New Member
The carbine was 3D printed. To start, I used the files by MoeSizzlac on the model index. I hollowed the model out, split it into parts, added holes for the LEDs and then did some minor modelling to allow me to slot a PVC pipe into the barrel. I'm not a skilled modeller by any means and just used simple tools on meshmixer like the plane cut.
This is the inside of one component, showing how the PVC pipe slotted into the main section of the weapon.
I also wanted to make sure that the electronics were accessible in future, in case any repairs needed to be made, so I was sure to leave some of the top sections open so that I could make the panels removable.
Unfortunately in my eagerness to see the carbine completed, I glued the weapon together without realising how difficult it would be to access some of the lower LEDs in the front section.
The two larger LEDs connected to the barrel in particular would have been extremely difficult to reach. So after considerable thought, I decided to sell this carbine and start again, this time installing those LEDs before gluing the body together.
This is the inside of one component, showing how the PVC pipe slotted into the main section of the weapon.
I also wanted to make sure that the electronics were accessible in future, in case any repairs needed to be made, so I was sure to leave some of the top sections open so that I could make the panels removable.
Unfortunately in my eagerness to see the carbine completed, I glued the weapon together without realising how difficult it would be to access some of the lower LEDs in the front section.
The two larger LEDs connected to the barrel in particular would have been extremely difficult to reach. So after considerable thought, I decided to sell this carbine and start again, this time installing those LEDs before gluing the body together.
SIERRA720
New Member
It wasn't a huge loss though. To be honest, at that time I'd just gotten a new 3D printer: a Bambulab X1C, and was eager for a new project to test it out with.
I quickly printed each component and did something I don't usually do - I started filling and sanding each piece before joining them. I wanted to minimise the work I would have to do once the carbine was together this time around as there would now be LEDs in the mix.
After I had prepared the pieces, I installed those troublesome larger LEDs in the back of the barrel.
And then glued the rest of the body together using a combination of super glue and plastic welding with a soldering iron.
This is where things started to get tricky..
I hadn't used a soldering iron for electronics since I was in high school and it had hit me that I would need to design one or more circuits to power 40-50 LEDs.
After watching a few YouTube videos and a big shop for supplies at my local hobby store, I decided to give it a crack. And honestly, it wasn't as intimidating as I had thought.
I ended up designing three circuits for the weapon. The first was for the larger LEDs, the second was for the cluster in the middle of the weapon, and the third was for the LEDs at the rear.
If I could go back in time and redo the carbine with what I now know, I would design the whole system around one circuit. It would have been worth the time to design it as I will admit, it is a little bit annoying having to turn on three switches everytime. But at the time, I wasn't very confident with my skills and was going through a mad crunch to get the carbine ready for a convention. It seemed easier to split a large, complicated circuit into three smaller parts.
I did a quick test fit without gluing (this picture only shows the rear lights) to make sure that everything fits, and moved back to painting.
I quickly printed each component and did something I don't usually do - I started filling and sanding each piece before joining them. I wanted to minimise the work I would have to do once the carbine was together this time around as there would now be LEDs in the mix.
After I had prepared the pieces, I installed those troublesome larger LEDs in the back of the barrel.
And then glued the rest of the body together using a combination of super glue and plastic welding with a soldering iron.
This is where things started to get tricky..
I hadn't used a soldering iron for electronics since I was in high school and it had hit me that I would need to design one or more circuits to power 40-50 LEDs.
After watching a few YouTube videos and a big shop for supplies at my local hobby store, I decided to give it a crack. And honestly, it wasn't as intimidating as I had thought.
I ended up designing three circuits for the weapon. The first was for the larger LEDs, the second was for the cluster in the middle of the weapon, and the third was for the LEDs at the rear.
If I could go back in time and redo the carbine with what I now know, I would design the whole system around one circuit. It would have been worth the time to design it as I will admit, it is a little bit annoying having to turn on three switches everytime. But at the time, I wasn't very confident with my skills and was going through a mad crunch to get the carbine ready for a convention. It seemed easier to split a large, complicated circuit into three smaller parts.
I did a quick test fit without gluing (this picture only shows the rear lights) to make sure that everything fits, and moved back to painting.
SIERRA720
New Member
I first painted the silver section of the body using an old bike mount as a stand. It wasn't ideal, but it's a bit awkward trying to paint the carbine due to its size and the curves.
For the purple, I always knew what paint I was going to use.
Dupli-colour have an awesome metal cast paint range where you spray on a chrome base and paint over the top with a glossy coloured clear coat. I had used it before in the past and the effect looks fantastic, especially in person. I had always wanted to use the purple for a Covenant weapon so this was my chance.
It did not dissapoint, but as always, do some experimentation first to find the best way to paint. It took me a few tries on test pieces before I was 100% happy with the coat.
Afterwards was the most fun part of the whole build! The detail painting
I used a brush to colour in every single black dot around the handle and on a few other places. This might have been the most fun I have had while painting. It was very easy to do and was super satisfying lol. This was followed by a simple Blackwash for weathering. I didn't do anything elaborate as I was worried about accidentalky weathering it too heavily when I wanted it to look fairly clean
Unfortunately, this was followed by the most difficult part of the build, installing the LEDs.
Even with the front LEDs already installed, the mid-section LEDs were still extremely difficult to access. I started with the front lower three on each side, adding a small amount of super glue around the LED and then trying very carefully to get them into their corresponding holes without damaging the wiring or getting glue everywhere. Needle noses pliers were essential here. After the bottom ones were installed, the top ones weren't much of a problem luckily.
Maybe someone more skilled with electronics would have a suggestion for improving the process, but I really did have a hard time here. I left a decent amount of wire between each LED to allow me to manouver them in, but too much wiring also caused the space to get crowded. Luckily I didn't damage any of the wiring or LEDs during this process.
I also used baking soda to cause the super glue to set immediately when it was in the right spot. This worked perfectly at the time, but the problem was baking soda was falling out of the carbine for months afterwards xD
For the purple, I always knew what paint I was going to use.
Dupli-colour have an awesome metal cast paint range where you spray on a chrome base and paint over the top with a glossy coloured clear coat. I had used it before in the past and the effect looks fantastic, especially in person. I had always wanted to use the purple for a Covenant weapon so this was my chance.
It did not dissapoint, but as always, do some experimentation first to find the best way to paint. It took me a few tries on test pieces before I was 100% happy with the coat.
Afterwards was the most fun part of the whole build! The detail painting
I used a brush to colour in every single black dot around the handle and on a few other places. This might have been the most fun I have had while painting. It was very easy to do and was super satisfying lol. This was followed by a simple Blackwash for weathering. I didn't do anything elaborate as I was worried about accidentalky weathering it too heavily when I wanted it to look fairly clean
Unfortunately, this was followed by the most difficult part of the build, installing the LEDs.
Even with the front LEDs already installed, the mid-section LEDs were still extremely difficult to access. I started with the front lower three on each side, adding a small amount of super glue around the LED and then trying very carefully to get them into their corresponding holes without damaging the wiring or getting glue everywhere. Needle noses pliers were essential here. After the bottom ones were installed, the top ones weren't much of a problem luckily.
Maybe someone more skilled with electronics would have a suggestion for improving the process, but I really did have a hard time here. I left a decent amount of wire between each LED to allow me to manouver them in, but too much wiring also caused the space to get crowded. Luckily I didn't damage any of the wiring or LEDs during this process.
I also used baking soda to cause the super glue to set immediately when it was in the right spot. This worked perfectly at the time, but the problem was baking soda was falling out of the carbine for months afterwards xD
SIERRA720
New Member
I wish I could say that the little section with the four LEDs closer to handle were easier but it was also a pain. I ended up 3D modelling a small square with holes in to hold each LED in position. I glued the LEDs into this piece and with some difficulty, glued the piece into the slot on each side. Unfortunately, it was pretty trick to get the square holders in position as the internal surfaces were curved and the square only awkwardly made contact with the edges. It wasn't pretty, but I did eventually get them in. This whole process took a few hours, and it was about 8pm the night before I was leaving for the con.
This is the aftermath, showing how crowded everything was in the mid section. Good news was that the lights were far more easily accessible in the rear portion and installing them was a breeze
(I should also mention that I used magnets and some elastic to hold the doors closed on the top! You can see where I installed them in the above picture)
And with that, at 10 pm the night before an 8 hour drive to PAX, I had finished the carbine! My most challenging build by far, but the one I am most proud of
This is the aftermath, showing how crowded everything was in the mid section. Good news was that the lights were far more easily accessible in the rear portion and installing them was a breeze
(I should also mention that I used magnets and some elastic to hold the doors closed on the top! You can see where I installed them in the above picture)
And with that, at 10 pm the night before an 8 hour drive to PAX, I had finished the carbine! My most challenging build by far, but the one I am most proud of
SIERRA720
New Member
I hope this thread is a useful reference for anyone thinking about a similar build in future!
I learnt a lot of skills along the way, especially relating to modelling, electronics, and painting metallics.
One thing I had intended to do in future was to add LEDs to the carbine's cartridge (magazine/clip?), but honestly I'm happy with where it is at the moment and have moved on to other projects.
Here's me with the carbine a few days later at PAX with the recon helmet I made alongside the carbine (I believe the file was also from the model index, and the visor was by Branfuhr studios). And here's the carbine with my other Covenant weapons, noting that the only one I made myself was the carbine:
Overall, while it was a challenging build, it resulted in my favourite prop I've ever made. If you're interested in making one, I'd say give it a shot! If you have any questions, feel free to leave them here and I'll do my best to help out
Thanks for reading!
I learnt a lot of skills along the way, especially relating to modelling, electronics, and painting metallics.
One thing I had intended to do in future was to add LEDs to the carbine's cartridge (magazine/clip?), but honestly I'm happy with where it is at the moment and have moved on to other projects.
Here's me with the carbine a few days later at PAX with the recon helmet I made alongside the carbine (I believe the file was also from the model index, and the visor was by Branfuhr studios). And here's the carbine with my other Covenant weapons, noting that the only one I made myself was the carbine:
Overall, while it was a challenging build, it resulted in my favourite prop I've ever made. If you're interested in making one, I'd say give it a shot! If you have any questions, feel free to leave them here and I'll do my best to help out
Thanks for reading!
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