Front mounted bltouch/crtouch + STEP (Patreon)

Updated bltouch model Aug15 2022

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By request, here is a front mounted bltouch
use screws (M3x8) and M3 nuts to secure the bltouch and longer screws for top mounted fans screws anything between M3x25 and M3x30

offset X = 0

BLTOUCH
offset when used with a 4020 front fan.

offset Y = -61.85 for stock type hotend (like dragonfly BMS, microswiss, etc)

offset Y = -56.35 for v6 type hotend (like dragonfly BMO, dragon, rapido etc)

offset when used with a 4010 front fan (and no spacer between Saturn and fan)

offset Y = -51.85 for stock type hotend (like dragonfly BMS, microswiss, etc)

offset Y = -46.35 fro v6 type hotend (like dragonfly BMO, dragon, rapido etc)

CRTOUCH
offset when used with a 4020 front fan.

offset Y = -59.3 for stock type hotend (like dragonfly BMS, microswiss, etc)

offset Y = -53.8 for v6 type hotend (like dragonfly BMO, dragon, rapido etc)

offset when used with a 4010 front fan (and no spacer between Saturn and fan)

offset Y = -49.3 for stock type hotend (like dragonfly BMS, microswiss, etc)

offset Y = -43.8 fro v6 type hotend (like dragonfly BMO, dragon, rapido etc)

you will have to adjust your mesh min max,
your X should be as wide as the bed  
but max Y will be limited by the offset, so around 155 (4020 fan) to 165mm (4020 fan) will be you max mesh Y