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How to print lightweight frames for drone builders

A practical guide for drone builders to print lightweight frames, covering material choice, print settings, test pieces and fit checks before flight.

By TexHouse ยท

TexHouse is published by the makers of LunarWerx 3D Print, Vector3D and MeshyDL, which are compared here alongside other tools.

Print a lightweight drone frame by checking the design first, testing a small piece to confirm your settings, then printing and test fitting the full frame. LunarWerx 3D Print is one option to check among others for some of these steps, and its tools are free to use. [1] [1]

OptionWhat it doesFee
LunarWerx 3D PrintBrowser tools that work out ironing settings, check parts for injection moulding and design 3D-printable foam inserts [1]The tools are free to use [1]
Other tools for this jobNo facts on this page; check each tool's own pageNot published

What you need before you start

A drone frame starts as a design file, so the work begins before the printer is turned on. Have a finished model in a format your slicer accepts, and check that every arm, mount and hole is sized for the motors, battery and flight controller you plan to use. Confirm that the printer bed is large enough for the longest part, or plan to print the arms in pieces.

Choose a filament suited to light structures and to the knocks a drone meets in a crash, and keep the spool dry, because damp filament tends to print weaker. Have a set of calipers ready to measure holes and mating edges, a scraper to remove parts from the bed, and a clean build surface. Keep a notebook of the settings that worked, so the next frame starts from a known result rather than from memory. Finally, gather the hardware you will test fit with, including screws, standoffs and any inserts the design calls for.

Step by step

  1. Check the design. Look at the model on screen and confirm that the arms, motor mounts and battery tray line up with each other and with the parts they connect to.
  1. Repair the file. Open the model and fix any faces that are turned backwards or gaps that would confuse the slicer, then save a clean copy.
  1. Orient the parts. Lay each arm so that the strongest direction of the print runs along the load it will carry in flight, because layer lines are weakest when pulled apart.
  1. Choose the material. Pick a filament whose strength and weight suit the job, and read its datasheet for the temperatures to use.
  1. Set the first layer. Clean the bed, level it, and adjust the first layer height so the plastic sticks without gaps. A first layer that lifts at the corners will weaken the whole part.
  1. Print a test piece. Print one arm or one mount before the full set, and inspect it for stringing, loose layers and holes that are too tight or too loose.
  1. Adjust and check dimensions. Measure holes and mating edges with calipers, then change scale or tolerance settings if the fit is off.
  1. Print the full frame. Start the full set once the test piece looks right, and let the parts cool before you remove them from the bed.
  1. Test fit with real hardware. Assemble the frame with the screws and standoffs you plan to fly with, and look for flex, cracks or loose holes before you fly.

Tools that can do it

LunarWerx 3D Print is made by the team that publishes this site, and it is one option to check among others for this job. It is a set of browser tools for 3D printing work. [1] It runs in a web browser [1], and you use it on its website, which is hosted on Cloudflare. [1]

The ironing helper works out ironing settings for your printer, material and finish, and exports a ready 3MF file. [1] The test plate tool makes a 9-pad or 16-pad test plate around your settings, and you mark each pad as worked or not. [1] For a frame with flat top surfaces, a test plate can be printed before the full part, so you check the settings on a small piece first. [1] You can click flat top surfaces, and the export adds a modifier part over each picked surface. [1]

When you open an STL file with faces turned backwards, it turns them right side out and says how many it fixed. [1] One checkbox slows just the first layer to 15 mm/s by default, and the maker says it then sticks to a clean plate without glue. [1] It runs only in your browser, and signing in with Connections makes your settings, recent test plates and print results follow you to every computer. [1]

This page has no facts about other tools for this job, so it does not describe them. When you compare any other tool, check whether it runs in a browser or on your computer, what it charges, whether it exports the file type your printer needs, and whether it handles the kind of part you plan to print.

Common mistakes to avoid

Skipping the design check is a common error. A frame printed from an unchecked file can have holes that are too tight or arms that do not line up, and reprinting costs time and filament. Check the fit on screen before you slice.

Printing the full frame before a test piece is another mistake. A single arm or mount shows the settings, fit and strength of the material faster than a whole set does, so print the small part first.

Ignoring the bed is a frequent cause of failed first layers. A bed that is dirty or out of level lets parts lift or shift, which weakens thin walls. Clean the surface and check the level before each print.

Choosing the wrong orientation can leave a frame weak where it counts. Parts printed with the layers running across the load path may crack under a hard landing, so orient the strongest direction along the load.

Testing without the real hardware hides problems. Assemble the frame with the actual screws and standoffs before flying, and look for flex, cracks and loose holes.

Frequently asked questions

Can LunarWerx 3D Print be used for free?

The tools are free to use. [1] You use them on the website, which is hosted on Cloudflare, and they run in a web browser. [1] [1] This page does not give fees for other tools, so check each tool's own page for its price before you choose.

Does LunarWerx 3D Print repair flipped faces in an STL file?

Yes. When you open an STL file with faces turned backwards, LunarWerx 3D Print turns them right side out and says how many it fixed. [1] That count tells you whether the file needed repair before you slice it. Check the part on screen before printing, since a file can have problems beyond faces that are turned backwards.

Does LunarWerx 3D Print keep your settings on every computer?

It runs only in your browser. Signing in with Connections makes your settings, recent test plates and print results follow you to every computer. [1] The tools run on their own website, which is hosted on Cloudflare. [1] If you work from a shared computer, sign out when you finish so your saved settings stay with your account.

How do you stop the first layer of a printed drone frame from lifting?

Start with a clean build surface, because oil and dust stop the first layer from sticking. Level the bed and set the first layer height so the plastic presses slightly into the surface. Print a small test piece before the full frame so you can see whether the first layer holds. If a corner still lifts, check that the surface is not warped, consider a brim or a slower first layer, and test again.

What should drone builders check before choosing a print tool?

Check whether the tool runs in a browser or needs installing, what it charges and whether that covers everything you need, and whether it exports the file type your printer uses. Look at what the tool does for your kind of part, such as ironing, file repair or fit checks, and whether it keeps your settings if you work on more than one computer. Read each tool's own page, because this page does not compare other tools.

The tools are free to use. [1]

Try LunarWerx 3D Print

Sources

  1. LunarWerx 3D Print's own description of itself (the product of this site's publisher)

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