<p>Is there a way to change the use of an extruder port on a 3D printer motherboard to move stepper motors (on y axis) on a 3D printer?</p>

<p>This is for a school project, and we have replaced the extruder with a laser for cutting material.</p>

<p>We were tasked with converting a 3D printer into LOM 3D printer, the laser is set using the fan port, however we still need two stepper motors to move material from one side of the printer to the other after each layer of material is cut.</p>

<p><a href="https://i.stack.imgur.com/l40X1.png" rel="nofollow noreferrer" title="Diagram"><img src="https://i.stack.imgur.com/l40X1.png" alt="Diagram" title="Diagram"></a></p>

<p>The mother board we are using is <a href="https://rads.stackoverflow.com/amzn/click/com/B07MXX2RV7" rel="nofollow noreferrer" rel="nofollow noreferrer">WitBot MKS Gen L V1.0 Controller Board Integrated mainboard Compatible Ramps1.4/Mega2560 R3 with A4988 Motor Driver for 3D</a>.</p>

This has nothing to do with the infill overlap, the image you've added looks as if the issue is related to non-bonding perimeters (it looks as if it is in between the 2
nd
and the 3
rd
perimeter), hence infill overlap doesn't apply here. If that is the case look into
this question
.
I've had this same issue, the problem is that if the perimeters do not touch, this is most probably caused by insufficient filament flow which can be a result of a too high of a print speed (or too low print temperature) of the inner perimeters. This is frequently seen when printing PETG. PETG has a limited print speed, the PETG I use (premium brand) has a maximum speed value of 50 mm/s, your values are for some values over that value. That would be fine for PLA, but high for PETG, the question is not clear on the material used for this print (the hotend temperatures hint to PLA, the bed temperatures are rather high though).
If it is not related to the material being printed, these gaps are also explained if the positioning of the nozzle is not correct, e.g. caused by loose belts. This is supported by the comment on the first layer:
where the infill on a first layer would often not reach the perimeter shells