Description: This article contains some of the most frequently asked questions about Magnetic Iron filament from Summer 2019.

Q: What is Magnetic Iron filament?
A: Like metal filament, magnetic iron filament is (usually) PLA filament with iron powder mixed in. It is used for the same reasons as Metal filament, however in this case it will also be magnetic.

Q: Why would I use Magnetic Iron filament?
A: It is strong and durable and has very little shrinkage due to cooling.

Q: Why wouldn’t I use Magnetic Iron filament?
A: It requires fine-tuning of temperatures, flow rate, and post-processing. It is not very flexible, and expensive.

Q: What temperatures do I print Magnetic Iron filament at?
A: While the exact temperature will vary based on your printer, the filament you are using, and your preferences, the recommended range of temperature for Magnetic Iron filament is 190-215°C, and 55-70°C for the bed temperature. This may vary depending on the base filament used. You are not required to use a heated bed; however, it does make the process much easier.

Q: What sizes of filament do I need?
A: The size of filament that you need will vary based on your printer. Currently there are 1.75mm and 2.85mm filaments available. Usually printers will only support one of these sizes, so ensure you are using the correct size.

Q: Why is there 3.0mm filament listed online?
A: 3.0mm filament is another name for 2.85mm filament. It was originally used as an easier way to purchase filament, rather than using a rather specific number of 2.85mm. However, over time some manufacturers did not realize this and started making 3.0mm filament, so be sure to check the size in the specifications for the filament. This will normally be listed as true diameter and should be listed as 2.85mm rather than 3.0mm. 1.75mm filament however does not have this issue, and you can purchase it without any inconveniences.

Q: What print speed should I use when printing with Magnetic Iron filament?
A: The exact speed will vary based on your printer and your personal preference, however typically 30mm/s - 40mm/s is the recommended print speed.

Q: What retraction settings should I use?
A: Retraction settings (speed and length) will vary greatly based upon your printer, what type of extruder you are using, and what filament you are using. To fine tune this based on your printer, you can follow this guide: https://www.matterhackers.com/articles/retraction-just-say-no-to-oozing.