How we make this

Sources, in order of preference

1. Manufacturer documents. Technical data sheets (TDS), safety data sheets (SDS) and official product pages from filament makers such as Bambu Lab, Prusa Research (Prusament) and Polymaker.
2. Official documentation. The Prusa Knowledge Base, the Bambu Lab Wiki, the OrcaSlicer wiki, and the Klipper and Marlin firmware documentation.
3. Source code. Where a formula matters, the slicer's own code (for example PrusaSlicer and OrcaSlicer on GitHub).

We do not cite forums, Reddit, YouTube, retailer listings or Wikipedia. They are sometimes useful for finding a lead; the page then cites the primary document instead.

How the filament tables are built

Each brand has one data file. A value enters it only when a manufacturer document states it, and the file records which document and on what date it was read. Values are copied as published: a range stays a range, a single value stays single, and conditions attached to a value (the build plate, the dryer type, the HDT test load, the test standard) are kept as notes. If the document is silent, the value is "not published". We never fill a gap with a value from another brand or a "typical" figure.

When two documents from the same maker disagree (for example a data sheet and a product page), the data sheet wins and the disagreement is noted. Scanned data sheets without a text layer are read with optical character recognition and the values are checked against the rendered page.

The database currently holds 115 products from 9 brands and 134 source documents. A brand gets its own page only when it publishes enough to explain; otherwise it appears in the tables only.

How the calculators work

Every calculator page shows the formula it applies and cites where the formula comes from: the extrusion cross-section from PrusaSlicer and OrcaSlicer source code, rotation distance from the Klipper documentation, flow ratio arithmetic from the OrcaSlicer wiki. The calculation code has automated tests that reproduce the worked examples in those documents. Calculators run in your browser; inputs are not sent anywhere.

How the guides are written

Guides are drafted with AI assistance from the cited sources, then checked: every non-obvious claim carries a numbered citation that links to the Sources list at the bottom of the page, and the build fails if a citation points to a source the page does not list. Every cited link is checked to make sure it resolves. Each page lists the date its sources were read.

Guides describe methods as their developers document them. They do not report experiments, because none were run for this site: you will not find "we tested" or "in our experience" here.

Review status

Every page carries an internal review flag. Pages are published in batches, and a page's publish date is the day it actually went live; dates are never set in the past. When a page is materially updated, it shows an "Updated" date.

What we deliberately do not do

• No product rankings, "best filament" lists or affiliate links.
• No invented authors, testimonials or test data.
• No medical, legal or electrical safety advice. Safety notes point to the manufacturer's SDS or manual.

Corrections

If a value no longer matches the manufacturer's current document, emailcontact@slicerdial.site with the link. See also thedisclaimer.