The guide below will help you determine which Hot-End generation (version) is installed in your Leapfrog Bolt (PRO) 3D printer. 


Leapfrog Bolt Hot End - Generation 1

Connector color: White
Nozzle: 0.35mm Brass

Filament size: 1.75mm

Heatbreak: PTFE liner

Temperature sensor: NTC Thermistor - EPCOS 100k (4.7k pullup)

Max. temperature: 270 ℃

Heatercartridge: 40W 24V [⌀7mm x 21.5mm)


Hardware required:

1. Head PCB type V01-02 / V2 - item no: not available  (required on both printheads)

2. RJ45 alignment clip R9 [HEAD PCB V01-02].STL


When upgrading from Generation 1 to Generation 2 / Generation 3, please look at 'hardware required'. 






Leapfrog Bolt (PRO) Hot End - Generation 2

Connector color: Black

Nozzle: 0.35mm Brass / 0.5mm Stainless Steel / 0.8mm Brass

Filament size: 1.75mm

Heatbreak: PTFE liner

Temperature sensor: PT100

Max. temperature: 270 ℃

Heatercartridge: 40W 24V [⌀7mm x 21.5mm)


Hardware required:

1. Head PCB type V01-03 / V3 - item no: C-04-1101 (required on both printheads)

2. Requires RJ45 bracket: RJ45 alignment clip R7 [HEAD PCB V3].STL

 http://bolt.lpfrg.com/support/solutions/articles/11000082138-rj45-bracket




Leapfrog Bolt (PRO) Hot End - Generation 3

Connector color: Black

Nozzle: https://e3d-online.com/collections/nozzles/products/v6-nozzles

Filament size: 1.75mm

Heatbreak: PTFE liner

Temperature sensor: PT100

Max. temperature: 270 ℃

Heatercartridge: 40W 24V [⌀6mm x 21mm)


Hardware required:

1. Head PCB type V01-03 / V3 - item no: C-04-1101 (required on both printheads)

2. Requires RJ45 bracket: RJ45 alignment clip R7 [HEAD PCB V3].STL

 http://bolt.lpfrg.com/support/solutions/articles/11000082138-rj45-bracket