--- {"title": "How to choose durable print settings for assistive device makers", "description": "A practical guide for assistive device makers to choose durable print settings, with steps, tools that can help and mistakes to avoid.", "url": "https://texhouse.us/how-to-choose-durable-print-settings-for-assistive-device-makers/", "date": "2026-10-21"} --- A practical guide for assistive device makers to choose durable print settings, with steps, tools that can help and mistakes to avoid. Durable print settings come from testing a few options with the material and load a part will really see, then checking the test pieces by hand. This guide covers what to have ready, the steps to follow, tools that can help and mistakes to avoid. | Option | What it does | Fee | |---|---|---| | LunarWerx 3D Print | Browser tools that work out ironing settings, check parts for injection moulding and design 3D-printable foam inserts [^1] | Free to use [^1] | | Other tools | Check each tool's own page for what it does | Not published | ## What you need before you start Before you choose print settings for a part that people will rely on, have a few things ready. Have the exact filament you plan to use, with its brand and type written down, because each material behaves differently under load and heat. Check that the printer is mechanically sound: belts should be tight and even, the frame square, and the bed level, since a loose machine can leave weak layers that look fine. Keep a set of calipers close by to measure walls, holes and test pieces. Write down how the finished part will be used: how much force it takes, how often it is handled, whether it touches skin, and whether it must be cleaned or wiped down. Finally, keep a notebook or spreadsheet with a row for each setting and the result you saw. Durable settings are usually found by comparing several trial prints, and a written record keeps those comparisons clear. ## Step by step 1. Write down the job. Note how the part will be held, what force it will take, and what it must survive, such as drops or repeated bending. The most important one or two loads decide the rest of the choices. 2. Pick the material. Choose a filament whose datasheet lists the strength and heat limits you need, and confirm the datasheet is for the exact product you will buy. 3. Set the walls and infill. Walls carry much of the load in many parts, so print a test piece with thicker walls and a moderate infill, then compare it with a thinner version. 4. Choose the temperature. Print test pieces across the range the datasheet gives, and look for layers that bond cleanly without stringing or burnt spots. 5. Choose the orientation. Layers are usually the weakest direction, so orient the part so the layer lines run across the main load rather than along it. 6. Test the strength. Load each test piece in the same way, by hand or with a simple weight, and note where it bends, cracks or splits. 7. Check fit and surface. Measure holes, snap fits and surfaces with calipers, and note any rough or ridged areas that might trap dirt or irritate skin. 8. Repeat on the real part. Print the chosen settings on the actual part, let it cool fully, then check it again after handling and cleaning. ## Tools that can do it LunarWerx 3D Print is a set of browser tools that work out ironing settings for your printer, check a part for injection moulding and design 3D-printable foam inserts. [^1] The ironing helper works out settings for your printer, material and finish and exports a ready 3MF file. [^1] It makes a 9-pad or 16-pad test plate around your settings, and you mark each pad as worked or not. [^1] You can also click flat top surfaces, and the export adds a modifier part over each one. [^1] It runs in a web browser [^1] and you use it on its website, which is hosted on Cloudflare. [^1] It runs in your browser, and sign-in with Connections lets your settings, recent test plates and print results be available through that account. [^1] The sources for this guide do not describe other tools, so this page says nothing about what they do. Check each tool's own page for what it does and which printers it works with before you decide. ## Common mistakes to avoid Choosing settings from a single print is a common mistake. One good-looking part does not show how it behaves under load, so test several pieces and bend or load them the same way. Trusting the material name alone is another. Two filaments with the same name can differ by brand and batch, so check the datasheet for the exact product. Printing in the easiest orientation rather than the strongest one causes parts to split along layer lines. Orient the part for the main load first, then check whether it still prints well. Skipping the first layer check leads to parts that peel off the plate mid-print. Check the first layer on each new surface. Leaving filament exposed to moisture can weaken prints. Keep spools sealed and dry when they are not in use, and dry them if the datasheet calls for it. Forgetting to recheck after cleaning or handling is a mistake too. Repeated washing or heat can change how a part behaves, so test the finished part after those steps. ## Frequently asked questions ### How do you choose durable print settings for a part that bears load? Start by writing down the load and how the part will be held, then choose a material whose datasheet lists the strength you need. Print test pieces with a few wall, infill and temperature settings, and orient them so layer lines run across the main load. Bend or load each test piece the same way and keep the setting that holds up best. ### Is LunarWerx 3D Print free to use? Yes, the tools are free to use. [^1] The ironing helper works out ironing settings for your printer, material and finish and exports a ready 3MF file. [^1] You use the tools on its website, which is hosted on Cloudflare. [^1] ### Does LunarWerx 3D Print run in a web browser? Yes, it runs in a web browser. [^1] You use it on its website, which is hosted on Cloudflare. [^1] It runs in your browser, and sign-in with Connections lets your settings, recent test plates and print results be available through that account. [^1] ### Can LunarWerx 3D Print help a first layer stick without glue? One checkbox slows just the first layer to 15 mm/s by default. [^1] LunarWerx 3D Print says the first layer then sticks to a clean plate without glue. [^1] Still, check the first layer of each test print yourself before you trust a full run. ### What should you check after choosing print settings for a device? Recheck the finished part after cleaning, handling and any heat exposure, because those steps can change how it behaves. Compare the part to the test pieces you printed, and look for layers that have separated or surfaces that have roughened. Write the results in your notebook so the next print starts from a clear record. The tools are free to use. [^1] - [Visit LunarWerx 3D Print](/go/start) ## Sources [^1]: LunarWerx 3D Print's own description of itself (the product of this site's publisher) (/go/start)