step_off_foil

[rickwierenga]

https://youtube.com/shorts/L8cKzbF2jks

Hold down a plate by placing two channels on the edges of a plate that is sealed with foil
while moving up the channels that are still within the foil. This is useful when, for
example, aspirating from a plate that is sealed: without holding it down, the tips might get
stuck in the plate and move it up when retracting. Putting plates on the edge prevents this.

When aspirating or dispensing in the foil, be sure to set the min_z_endpos parameter in
lh.aspirate or lh.dispense to a value in the foil. You might want to use something like

well = plate.get_well("A3")
await lh.aspirate(
  [well]*4, vols=[100]*4, use_channels=[7,8,9,10],
  min_z_endpos=well.get_absolute_location(z="cavity_bottom").z,
  surface_following_distance=0,
  pull_out_distance_transport_air=[0] * 4)
await star.step_off_foil(well, front_channel=11, back_channel=6, move_inwards = 3)