Topics created by zuoyan

@mikeabuilder I don't have multiple tools, so it's simple. I never thought we can use slicer for this. In my start script, it tries different area (4 side rects) with different clearances, and calls this macro at the first suitable place. I think you may need to find a larger area so that multiple head can purge at the same time?

var min_x = ... ... var xc = (var.min_x + var.max_x) / 2 var yc = (var.min_y + var.max_y) / 2 var clearance = 40 ; start from 40 / 2 var rect_x1 = 0 var rect_x2 = 0 var rect_y1 = 0 var rect_y2 = 0 while var.clearance > 1 if mod(iterations, 4) == 0 set var.clearance = var.clearance / 2 if var.clearance < 1 break set var.rect_x1 = mod(iterations, 4) == 0 ? var.max_x + var.clearance : move.axes[0].min set var.rect_x2 = mod(iterations, 4) == 1 ? var.min_x - var.clearance : move.axes[1].max set var.rect_y1 = mod(iterations, 4) == 2 ? var.max_y + var.clearance : move.axes[2].min set var.rect_y2 = mod(iterations, 4) == 3 ? var.min_y - var.clearance : move.axes[2].max if var.rect_x1 + global.NOZZLE_DIAMETER > var.rect_x2 continue if var.rect_y1 + global.NOZZLE_DIAMETER > var.rect_y2 continue if (var.rect_x2 - var.rect_x1) * (var.rect_y2 - var.rect_y1) < var.purge_area continue ; Project (xc, yc) into the rect set var.xc = min(max(var.xc, var.rect_x1), var.rect_x2) set var.yc = min(max(var.yc, var.rect_y1), var.rect_y2) ; Shrink the rect to purge_area, close to (xc, yc) and close to a square var xl = max(sqrt(var.purge_area), var.purge_area / (var.rect_y2 - var.rect_y1)) var yl = var.purge_area / var.xl set var.rect_x1 = max(min(var.xc - var.xl / 2, var.rect_x2 - var.xl), var.rect_x1) set var.rect_x2 = var.rect_x1 + var.xl set var.rect_y1 = max(min(var.yc - var.yl / 2, var.rect_y2 - var.yl), var.rect_y1) set var.rect_y2 = var.rect_y1 + var.yl echo "Purge in the rect " ^ {var.rect_x1, var.rect_x2, var.rect_y1, var.rect_y2} M98 P"0:/macros/purge_rect.g" A{var.rect_x1} B{var.rect_x2} C{var.rect_y1} D{var.rect_y2} break if var.clearance < 1 echo "no place to purge"

@zuoyan said in mesh compensation causes dragging of moves:

Do we know the consequence of too high jerk/instantaneous speed change values? Like smoothed corner or lost steps?

You only need to increase the Z axis jerk slightly. 60 to 120 mm/min range. This will have zero effect on XY motion of corners, etc.

I do a generic preheat in start.g to get the heaters warming up while the printer homes. Then the slicer takes over with final temps. Saves some time anyway.

Thanks. I agree that a toolboard is easier.

I had a clone of 1LC board causing heater fault when printing in a enclosure (MCU T >= 81C). I'm waiting for new boards from Filafarm. If the problem persists, I may have to consider a version w/o a toolboard.