Team 3D/Risk Assessment

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This page contains the risk assessment for all printer operations; all printers should be assumed to fall into the generic form of their print type if not individually specified. This is to prevent copypasting for each individual machine, and to encourage thourough evaluation when needed. Typically the generic printer case should cover all or exceed the risks of any given printer.

Please see Points system for the details

Note: This covers NORMAL OPERATION. Scope of this is defined per assessment, but this means it covers things like printing, and not doing maintainence


Covers FFF, Fused Filament Fabrication (also known as FDM (Fused Deposition Modeling)) machines

If a machine uses filament, it is in here


Notice: this is currently a work in progress


This assessment covers:

  • Printing with the printer
  • Controlling the printer from the LCD
  • Controlling the printer via in hackspace web interfaces
  • Changing filament
  • Removing prints when finished


  • Hotend - Heated component
  • Heated Bed - Heated component

Persons at risk

  • Operator

Initial assessment of risk

Hazard identified Severity Probability Risk Factor
Hotend 2 1 2
Heated Bed 2 1 2


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  • Danger of lasers
  • Danger of resin

Points system

This is the standard points system used for all Risk assessments on the wiki thus far. It was copied in for completeness

Hazard severity Points Rating Definition
Nil 1 Very minor injury, bruise, graze, no risk of disease.
Slight 2 Minor injury, which would allow the individual to continue work after first aid treatment on site or at a local surgery. The duration of the stoppage or treatment is such that the normal flow of work is not seriously interrupted.
Moderate 3 Temporary disability causing injury or disease capable of keeping an individual off work for three days or more and reportable under RIDDOR
High 4 Causing death, serious injury or permanent disability to an individual.
Very high 5 Causing multiple deaths and widespread destruction eg. fire, building collapse.

Hazard likelihood Points Rating Definition
Remote possibility 1 There is really no risk present. Only under freak conditions could there be any possibility of an accident or illness. All reasonable precautions have been taken - This should be the normal state of the workplace.
Unlikely 2 This incident or illness might occur but the probability is low and the risk minimal.
Possible 3 The accident may occur if additional factors precipitate it, but it is unlikely to happen without them.
Highly likely 4 Will happen more often than not. Additional factors could precipitate an incident but it is still likely to happen without this additional factor.
Inevitable 5 If the work continues as it is, there is almost 100% certainty that an accident will happen, for example:

A broken stair or broken rung on a ladder Bare, exposed electrical conductors Unstable stacks of heavy boxes

Risk Rating Score Definition Action
1 to 4 Low No action required
5 to 9 Moderate Reduce risks if reasonably practicable
10 to 15 High Risk Priority action to be undertaken
16 to 25 Unacceptable Action must be taken IMMEDIATELY