How to Choose a Scale for 3D Printing Materials

Posted by AWS Team on Sep 5th 2026

Choosing a scale for 3D printing materials starts with two questions:

What is the smallest quantity you need to measure?

and:

What is the heaviest complete object or material load you will place on the scale?

Those answers help determine the right combination of:

Capacity
Readability
Accuracy requirements
Minimum usable load
Repeatability
Tare
Calibration
Platform size

For many small material-development tasks involving resin, pigments, additives, filament samples and lightweight printed parts:

100–500g × 0.01g

is a useful range.

For broad precision versatility:

500g × 0.01g

is especially practical.

For:

Complete filament spools
Large resin containers
Large prototypes
Heavy printed assemblies

2–5kg × 0.1g

may make considerably more sense.

The best scale is not the one with the most decimal places.

It is the one whose measurement range matches the way you actually use your 3D printer.

Quick Guide: Which Scale Do You Need for 3D Printing Materials?

Application	Suggested Capacity	Suggested Readability
Resin pigments	100–500g	0.01g
Resin colorants	100–500g	0.01g
Small resin samples	200–500g	0.01–0.1g
Small additives	100–500g	0.01g
Filament samples	100–500g	0.01g
Small printed parts	100–500g	0.01g
Medium printed parts	500g–2kg	0.1g
Partial filament spools	1–2kg+	0.1–1g
Full filament spools	1–2kg+	0.1–1g
Resin bottles	1–5kg+	0.1–1g
Large printed assemblies	2–5kg+	0.1–1g
Genuine milligram-level work	Low-capacity precision scale	0.001g when actually required

For many small 3D-printing material applications:

500g × 0.01g

is an excellent starting point.

Step 1: Decide What You Actually Need to Weigh

3D printing covers several very different weighing applications.

You may want to weigh:

Liquid resin
Pigments
Resin additives
Colorants
Filament samples
Full filament spools
Partial filament spools
Support material
Printed parts
Prototype components
Finished assemblies

The scale that works for:

0.25g of pigment

is not necessarily appropriate for:

1.2kg of filament and spool.

Start with your actual workflow rather than buying based on a general "3D printing scale" label.

Step 2: Identify Your Smallest Normal Measurement

Suppose your routine work includes:

Resin = 50g

Pigment = 0.45g

Filament sample = 5g

Printed part = 12g

The smallest quantity is:

0.45g

That immediately tells you a whole-gram scale will be too coarse for part of your workflow.

0.01g scale

provides much more useful measurement detail.

Step 3: Understand Capacity and Readability

Digital scales are commonly described using a format such as:

500g × 0.01g

The first number is capacity.

The second is readability.

In this example:

500g = maximum nominal capacity

0.01g = smallest displayed increment

AWS explains this relationship in What Does 500g × 0.01g Mean on a Digital Scale?.

Both specifications need to match your application.

Step 4: Decide Whether 1g Readability Is Enough

A 1g scale displays:

500g

501g

502g

This can work well for:

Full filament spools
Large resin bottles
Heavy printed parts
Large assemblies
Rough material inventory

If you are weighing kilogram-sized objects, whole-gram readability may sometimes provide enough information.

But it is generally too coarse for tiny pigments or small printed parts.

Step 5: Decide Whether You Need 0.1g

A 0.1g scale displays:

25.0g

25.1g

25.2g

This can be useful for:

Medium printed parts
Resin batches
Filament consumption
Prototype comparison
Support material
Larger samples

For many moderate 3D-printing applications:

0.1g readability

provides a good balance between useful detail and higher capacity.

Step 6: Decide Whether You Need 0.01g

A 0.01g scale displays:

5.00g

5.01g

5.02g

This level is useful for:

Resin pigments
Fine additives
Small colorant quantities
Filament samples
Lightweight printed parts
Miniatures
Small prototype components

For many precision material measurements:

100–500g × 0.01g

is a useful range.

Step 7: Decide Whether You Really Need 0.001g

A 0.001g scale displays:

5.000g

5.001g

5.002g

Because:

0.001g = 1mg

this is commonly called milligram readability.

Most ordinary 3D-printing work does not require it.

AWS compares these precision classes in 0.001g vs. 0.01g Scales: Which Precision Do You Need?.

Milligram-resolution scales may also be more sensitive to:

Air movement
Mechanical vibration
Static
Temperature
Surface instability

Choose 0.001g only when your actual measurement requirement genuinely calls for it.

Step 8: Do Not Confuse Readability With Accuracy

Suppose your scale displays:

12.35g

That tells you it has 0.01g readability.

It does not automatically guarantee:

±0.01g accuracy.

Readability is only one specification.

Also consider:

Accuracy specifications
Repeatability
Minimum usable load
Calibration
Environmental conditions

NIST's Calibration of Mass Standards provides broader technical context on mass measurement and calibration.

The practical rule is:

more decimal places do not automatically mean greater accuracy.

Step 9: Consider Minimum Usable Load

500g × 0.01g

scale displays changes of 0.01g.

That does not necessarily mean:

0.01g

is an appropriate working quantity.

The smallest reliably useful load may be higher.

This matters especially when measuring:

Tiny pigments
Fine resin additives
Extremely lightweight parts

Review available manufacturer specifications instead of assuming the readability equals the minimum working load.

Step 10: Consider Repeatability

Repeatability matters when comparing parts or recreating material experiments.

Suppose the same stable printed component is weighed repeatedly.

A consistent result might be:

12.45g

12.44g

12.45g

An inconsistent result might be:

12.45g

12.73g

12.21g

12.59g

12.30g

AWS explains several causes of changing readings in Why Does My Digital Scale Give Different Readings?.

Step 11: Find Your Heaviest Complete Load

Capacity should be based on the entire physical load.

For liquid material:

container + material

For a filament spool:

spool + remaining filament

For printed objects:

entire finished component or assembly

Suppose:

Resin cup = 100g

Resin = 300g

Pigment = 2g

Total:

402g

A 500g scale can support that load.

Step 12: Remember That Containers Count

Suppose:

Scale capacity = 500g

Empty resin container = 150g

Material = 300g

Total:

450g

That leaves only:

50g

of nominal headroom.

Never choose capacity based only on the material mass.

Step 13: Tare Does Not Restore Capacity

Place the 150g container on the scale.

Press tare.

Display:

0.00g

The scale is still physically supporting:

150g

Approximate remaining nominal capacity:

350g

Tare changes the displayed value.

It does not increase the mechanical load limit.

Step 14: Leave Capacity Headroom

Suppose your routine load is:

490g

and your scale capacity is:

500g

Remaining headroom:

10g

That provides very little flexibility.

If your normal objects approach 500g, consider a:

1kg or 2kg

scale instead.

Step 15: Choose Between 100g, 200g and 500g

100g Capacity

Useful for:

Tiny pigment tests
Small resin-additive experiments
Small printed parts
Short filament samples

Its biggest limitation is container weight.

200g Capacity

Useful for:

Small resin samples
Pigment development
Lightweight printed pieces
Filament samples

This provides more flexibility while remaining compact.

500g Capacity

Useful for:

Resin samples
Pigments
Additives
Small printed components
Filament samples
Small prototype assemblies
Weighing trays

For many precision 3D-printing workflows:

500g × 0.01g

is one of the most versatile compact configurations.

Step 16: Know When You Need More Than 500g

A 500g scale is not appropriate for many larger 3D-printing objects.

Examples include:

Complete filament spools
Heavy partial spools
Large printed prototypes
Resin bottles
Assemblies

For these:

1–5kg

or more may be required.

Do not sacrifice needed capacity solely to obtain finer readability.

Step 17: Choose a Scale for Resin Printing

Resin-printing workflows can include both large and tiny quantities.

For a main resin quantity:

0.1g readability

may often be sufficient.

For pigments and additives:

0.01g readability

can be much more useful.

AWS provides broader guidance in Best Digital Scale for Resin.

Step 18: Choose a Scale for Resin Pigments

Suppose your resin color formula contains:

Base resin = 50.00g

Black pigment = 0.45g

Blue pigment = 0.20g

Metallic pigment = 0.15g

For the pigment quantities:

100–500g × 0.01g

provides useful measurement detail.

Always follow manufacturer-specific compatibility and concentration instructions.

Step 19: Handle Resin According to Manufacturer Guidance

A digital scale measures mass.

It does not determine whether materials are safe to combine.

Follow the exact resin manufacturer's guidance for:

Handling
Storage
Pigment compatibility
Post-processing
Protective equipment

Formlabs provides resin and printer safety guidance covering safe handling of liquid photopolymer materials.

Precision weighing does not replace proper resin safety.

Step 20: Choose a Scale for Filament Samples

Small filament samples may weigh only several grams.

Example:

Sample A = 5.25g

Sample B = 5.48g

Sample C = 5.12g

0.01g scale

provides clear comparative measurements.

This can be useful for material tests and small extrusion comparisons.

Step 21: Choose a Scale for Full Filament Spools

Complete filament spools require much greater capacity.

If:

Spool + filament = 850g

a 500g precision scale cannot handle it.

For many normal spools:

1–2kg or greater

capacity is more practical.

For larger-format spools, choose even higher capacity.

Step 22: Estimate Remaining Filament by Weight

A scale can help estimate remaining filament.

Use:

current spool mass − known empty spool mass = approximate filament remaining

Example:

Loaded spool = 725g

Empty spool = 225g

Estimated filament:

500g

Use the actual empty-spool weight for the specific spool design.

Do not assume all empty spools weigh the same.

Step 23: Keep Filament Storage Conditions in Mind

Mass alone does not tell you whether filament is in good printing condition.

Some polymers absorb environmental moisture.

UltiMaker's 3D printer filament storage guide discusses appropriate filament storage and moisture considerations.

The distinction is important:

a scale measures mass, not material condition.

Step 24: Choose a Scale for Small Printed Parts

Suppose:

Part A = 6.45g

Part B = 6.18g

Part C = 5.92g

0.01g scale

provides useful comparative detail.

This can help when examining:

Design revisions
Infill changes
Wall-count changes
Material changes
Lightweighting experiments

Step 25: Choose a Scale for Larger Printed Parts

Suppose a finished prototype weighs:

1,750g

A 500g precision scale is unusable regardless of how fine its readability is.

For larger prints:

2–5kg

capacity may be required.

At that size:

0.1g

or even coarser readability may be adequate depending on the purpose.

Step 26: Choose a Scale for Prototype Comparisons

A digital scale can add another measurement to your design-development process.

Suppose:

Prototype A = 74.2g

Prototype B = 69.8g

Prototype C = 64.5g

Weight measurements can complement:

CAD data
Slicer estimates
Print-time data
Material estimates

A scale provides actual physical mass after printing.

Step 27: Do Not Assume Weight Explains the Cause of a Difference

If two printed parts weigh differently, the cause might include:

Geometry changes
Infill
Wall thickness
Material differences
Support material
Residual resin
Moisture
Post-processing

The scale identifies a mass difference.

It does not identify why the difference exists.

Step 28: Choose a Scale for Support Material

Support material can also be weighed.

For small samples:

100–500g × 0.01g

may be useful.

For full support-material spools:

1kg+

capacity may be required.

Again, distinguish between weighing:

samples

and:

entire spools.

Step 29: Platform Size Matters

The scale must physically support what you are weighing.

Consider whether the platform will hold:

A resin container
A filament spool
A printed part
A prototype assembly
A weighing tray

A scale with sufficient capacity can still be awkward if the platform is too small.

Step 30: Avoid Partial Support

Do not allow a large printed object to rest partly on the scale and partly on the workbench.

Any external support changes the load measured by the scale.

Use an instrument with an appropriately sized platform.

Step 31: Make Sure the Scale Has Tare

Tare is particularly useful when weighing resin or loose components.

Example:

Empty cup = 40.00g

Place it on the scale.

Press tare.

Display:

0.00g

Add resin:

50.00g

The scale now displays the resin mass directly.

Step 32: Sequential Tare Can Simplify Experiments

Suppose:

Base resin = 50.00g

Pigment = 0.45g

Additive = 0.20g

You may record one component, tare, and add the next.

Remember:

all components continue contributing to total physical capacity.

Step 33: Check Calibration Before Buying

Before purchasing a scale, determine:

Is it calibratable?
What calibration mass does it require?
Is the calibration weight included?
Are instructions provided?

AWS explains the general process in How to Calibrate a Digital Scale for Accurate Results.

Use the instructions for the exact scale.

Step 34: Do Not Assume Capacity Equals Calibration Weight

A 500g scale does not automatically use a:

500g calibration weight.

It might require:

200g
500g
Another specified mass

depending on the scale.

Always verify the model's calibration procedure.

Step 35: Use the Correct Calibration Reference

Do not substitute:

Printed calibration cubes
Filament samples
Printer parts
Coins
Batteries
Resin containers

for an appropriate calibration reference.

NIST's Calibration Procedures for Weights and Measures Laboratories provides broader technical background on mass calibration.

For normal workshop use, follow the scale manufacturer's instructions.

Step 36: Use a Stable Surface

A precision scale should sit on a:

Hard
Flat
Rigid
Stable

surface.

Avoid:

Flexible mats
Carpet
Soft surfaces
Unstable tables

3D-printing workstations can contain several vibration sources, making surface stability especially important.

Step 37: Keep the Scale Away From Printer Vibration

Operating printers can transmit vibration through a shared bench.

Other vibration sources include:

Resin mixers
Wash stations
Air compressors
CNC tools
Rotary tools

When making fine measurements, use a stable surface away from active machinery whenever practical.

Step 38: Control Airflow

3D-printing environments often use:

Ventilation
Fans
Air filtration
Enclosures
Exhaust systems

Fine-resolution scales can react to drafts.

Keep the weighing area away from direct airflow.

Step 39: Consider Static

Static can become relevant around:

Plastic filament
Printed components
Plastic trays
Pigment powders

This is especially noticeable with very small quantities.

Static may cause fine material to cling to containers or transfer tools.

Step 40: Consider Temperature Stability

Avoid expecting immediate maximum consistency after moving a scale from:

cold storage → warm workshop

or:

hot workspace → air-conditioned room

Allow the scale to stabilize according to manufacturer instructions.

Step 41: Choose a Clear Display

A good scale should make decimal placement obvious.

Compare:

0.25g

with:

2.50g

Look for:

Clear digits
Backlighting
Good contrast
Easy decimal visibility

Make sure your container or printed part does not hide the display.

Step 42: Consider Weighing Trays

Trays can help with:

Small printed components
Filament samples
Support material
Pigments
Loose hardware

Basic workflow:

Place the tray on the platform.
Wait for stability.
Press tare.
Confirm zero.
Add the material.
Record the mass.

The tray still counts toward physical capacity.

Step 43: Protect the Scale From Liquid Resin

Liquid resin can damage precision equipment if it enters:

Buttons
Platform gaps
Display seams
Electronics

Use disposable cups and trays.

Any protective barrier should not interfere with free movement of the weighing platform.

Step 44: Decide Between Battery and AC Power

Battery Power

Useful for:

Mobile workstations
Moving between printers
Compact hobby areas
Occasional measurement

AC Power

Useful for:

Dedicated material stations
Repeated production work
Long measurement sessions

Power source should be considered after capacity and readability.

Step 45: Decide Whether You Need One Scale or Two

Suppose your complete measurement range is:

0.20g → 300g

500g × 0.01g

scale may cover most applications.

Now suppose your range is:

0.20g → 3kg

One scale becomes much less practical.

A two-scale setup usually makes more sense.

Recommended Two-Scale Setup for 3D Printing

Precision Scale

500g × 0.01g

for:

Resin samples
Pigments
Additives
Filament samples
Lightweight printed parts
Miniature components

Higher-Capacity Scale

2–5kg × 0.1g

for:

Full filament spools
Large resin containers
Heavy printed parts
Prototype assemblies
Bulk materials

This gives each scale a more appropriate measurement range.

A Practical AWS Scale for Small 3D-Printing Materials

For many fine 3D-printing measurements, the AWS SC501g Precision Digital Pocket Scale provides:

500g capacity × 0.01g readability

Useful features include:

Stainless-steel weighing platform
Backlit LCD
Tare
Multiple weighing units
Two expansion trays
Compact design
Battery operation

You can review the AWS SC501g Precision Digital Pocket Scale for current specifications.

This capacity-resolution combination is especially practical for:

Resin samples
Pigments
Filament samples
Small printed components
Prototype pieces

When 500g × 0.01g Is Not the Right Choice

Choose a higher-capacity scale when:

You weigh full filament spools.
Your prints exceed 500g.
Your resin containers are heavy.
You weigh large assemblies.
Your normal load approaches the scale limit.

Choose finer than 0.01g only when:

Your actual measurement requirement genuinely calls for milligram-level resolution.

Example 1: Resin Pigment Experiment

Suppose:

Resin = 50.00g

Black pigment = 0.45g

Blue pigment = 0.20g

Secondary additive = 0.15g

A 0.01g scale provides useful detail for documenting each addition.

Follow all compatibility and concentration instructions from the manufacturers involved.

Example 2: Small Printed Component

Suppose:

Version A = 8.45g

Version B = 8.20g

Version C = 7.95g

A 0.01g precision scale clearly shows the differences.

Example 3: Partial Filament Spool

Suppose:

Current spool + filament = 675g

Known empty spool = 225g

Approximate remaining filament:

450g

Because the complete object weighs 675g, a 500g precision scale cannot be used.

Choose at least:

1kg capacity

with appropriate headroom.

Example 4: Large Prototype

Suppose:

Finished prototype = 2,100g

For this object:

3–5kg capacity

is more important than 0.01g readability.

Example 5: Filament Sample Comparison

Suppose:

Sample A = 6.25g

Sample B = 6.45g

Sample C = 5.90g

A 0.01g scale provides useful comparative data.

Interpretation should still consider:

Material type
Sample length
Diameter
Density
Moisture condition

Common Mistakes When Choosing a Scale for 3D Printing Materials

Buying Based Only on Decimal Places

More digits are not automatically better.

Confusing Readability With Accuracy

They are separate specifications.

Ignoring Minimum Usable Load

The smallest displayed increment may not be the smallest useful measurement.

Buying Too Little Capacity

Full filament spools and large prints can easily exceed 500g.

Forgetting Container Weight

Resin cups count toward capacity.

Assuming Tare Restores Capacity

It does not.

Ignoring Repeatability

Comparative experiments need consistent readings.

Choosing Too Small a Platform

Your spool or print needs proper support.

Ignoring Calibration

Choose a scale with a clear calibration procedure.

Using a Printed Calibration Cube as a Calibration Weight

Use the correct reference mass.

Weighing Next to an Operating Printer

Vibration can affect fine measurements.

Ignoring Airflow

Ventilation and fans can influence sensitive scales.

Ignoring Static

Plastic and fine powders can develop static.

Treating Weight as Proof of Print Quality

Mass is one measurement, not a complete quality assessment.

Assuming Filament Weight Tells You Moisture Condition

It does not.

Allowing Liquid Resin Into the Scale

Protect the instrument.

3D Printing Scale Selection Checklist

Before choosing a scale, ask:

Will I weigh resin, filament, printed parts or all three?
What is my smallest normal measurement?
What is my heaviest material quantity?
Will I weigh complete filament spools?
What do my empty spools weigh?
What is my heaviest printed part?
What is my largest complete physical load?
Do I need 1g readability?
Do I need 0.1g?
Do I need 0.01g?
Do I genuinely need 0.001g?
What accuracy specifications are provided?
What repeatability information is available?
What minimum usable load applies?
Is there sufficient capacity headroom?
Does the scale have tare?
Is sequential tare useful?
Is the platform large enough?
Can it support my spool or print properly?
Can I still see the display?
Can the scale be calibrated?
What calibration mass does it require?
Is that calibration weight included?
Are weighing trays included?
Can I protect it from resin?
Is my weighing surface stable?
Are nearby printers producing vibration?
Is there strong airflow?
Could static affect measurements?
Would two scales provide a better working range?

Frequently Asked Questions

What scale should I use for 3D printing materials?

For many small 3D-printing materials:

100–500g × 0.01g

is a useful range.

For larger objects and spools:

2–5kg × 0.1g

may be more appropriate.

Is 500g × 0.01g good for 3D printing?

Yes.

It is especially useful for:

Resin samples
Pigments
Additives
Filament samples
Small printed parts

What scale should I use for resin printing?

For small resin and pigment work:

100–500g × 0.01g

can be useful.

For larger resin quantities, select greater capacity.

What scale should I use for filament?

For small samples:

100–500g × 0.01g

may be useful.

For full filament spools:

1–2kg or greater capacity

is typically more practical.

Can I weigh filament to see how much is left?

Yes.

If you know the empty spool weight:

loaded spool − empty spool = approximate filament remaining

Does every empty spool weigh the same?

No.

Use the empty mass of the specific spool type you are measuring.

What scale should I use for small printed parts?

0.01g scale

can provide useful detail for lightweight components.

What scale should I use for large printed parts?

For kilogram-scale prints:

2–5kg or greater capacity

may be more important than fine resolution.

Do I need 0.001g for 3D printing?

Usually not.

Choose 0.001g only when your actual measurement requirement genuinely requires it.

Does tare restore capacity?

No.

Tare changes the display but does not remove the physical mass already on the scale.

Can weight tell me whether a print is good?

Not by itself.

Mass can be useful for comparison, but print quality also depends on geometry, dimensions, surface quality, mechanical properties and process conditions.

Can weight tell me if filament is dry?

No.

A scale measures mass, not filament moisture condition.

Why does my scale fluctuate beside my 3D printer?

Possible causes include:

Printer vibration
Ventilation airflow
Static
Temperature changes
Work-surface instability
Weak batteries
Calibration problems

Should I calibrate a scale used for 3D printing?

Follow the instructions for the exact model, especially when repeatable comparisons matter.

Can I use a printed calibration cube to calibrate the scale?

A printed cube should not substitute for the calibration reference specified by the scale manufacturer.

Should I use one scale or two?

If your work ranges from tiny pigments to multi-kilogram prints or spools, two scales are often more practical:

500g × 0.01g

for fine materials,

plus:

2–5kg × 0.1g

for larger objects.

Final Verdict: How to Choose a Scale for 3D Printing Materials

To choose the right scale for 3D printing materials, begin with:

your smallest normal measurement

and:

your largest complete physical load.

For:

Resin pigments
Additives
Filament samples
Small printed components
Miniatures
Material experiments

100–500g × 0.01g

is a strong precision range.

For broad small-material versatility:

500g × 0.01g

is particularly practical.

For:

Complete filament spools
Large resin bottles
Heavy prototypes
Multi-part assemblies

2–5kg × 0.1g

may be considerably more useful.

Do not choose a scale solely because it displays more decimal places.

Evaluate:

capacity, readability, minimum usable load, accuracy specifications, repeatability, tare, calibration, platform size and environmental stability.

For 3D-printing workflows spanning fractions of a gram through several kilograms, one of the most practical setups is:

a 500g × 0.01g precision scale for small materials and components

paired with:

a 2–5kg × 0.1g higher-capacity scale for spools, resin containers and large printed objects.

That combination gives you useful precision where small differences matter without sacrificing the capacity required for larger 3D-printing materials.