Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  

Estimating price in preference

Recommended Posts

Hi guys.

I've had my Ultimaker for only a week now and having so much fun. Just got a huge commision for a cosplay piece it's a Hawkeye's quiver from the Avengers and is 1/1 scale.

I was wondering how I estimate the cost to quote the client. I saw something in preferences about KG but what is the standard length of a roll of PLA for UM? Is there an easy formula for working this out? :???:



Share this post

Link to post
Share on other sites

Filament is sold by the kg in most places. Depending on the precise mix of additives, colorants, etc, the density is about 1.27g/cm³.

So 1kg is approximately 1000/1.27 = 787.5cm³ of plastic.

Then take the diameter of your filament to calculate the volume of a length of it. If the diameter is 2.85mm (which is about the average for most filaments) then the volume of 1 linear meter of filament is: (1000mm x pi x 2.85mm x 2.85mm /4) mm³. There are 10x10x10mm³ in 1cm³ - so divide that by 1000 to get pi x 2.85 x 2.85/4 = 6.38cm³ per meter.

This means that 1kg of plastic is roughly 787.5/6.38 = 123.4m long.

If you have a reasonably accurate digital scale that measures to below gram accuracy, then another approach is just to measure off a few meters, and weigh them to calculate the weight per meter, then divide that into 1kg to get the length. That will avoid any uncertainty over the diameter or density of your plastic.

You should be able to get the total volume of your object from your modeling software, but the actual print volume will be less if you have less than solid infill in the print. Your slicer should be able to tell you the volume of plastic it actually intends to use, and the cost of that, based on the numbers you supply in the preferences. The actual amount will likely be even less than that, as some slight under-extrusion tends to occur due to filament slipping, even in normal operation, but in theory you could use even more plastic if you over-extrude due to an increased flow setting in the UltiController, or an incorrect steps-per-e setting.


Share this post

Link to post
Share on other sites

The price for the wear and tear of the ultimaker and your time is probably

much higher than the price of the materials. Plus it may take you 2 or 3

tries to get it right.


I'm not sure if we are allowed to put links here but if you check my website link you can follow the progress. Thanks guys ;)



Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  


  • Our picks

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 24 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 18 replies

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!