Roll Cutter User Guide

1. Safely remove the used roll with its roll support bar from the machine and place it on a table.
2. Remove the roll clamp at the right end of the roll.
3. Remove the roll support bar from the roll.
4. With a ruler, set the left roll clamp position per the diagram to 3.5″ for 12-24″ models or 4.5″ for larger models and tighten the screw. If your model is substantially wider than your roll, place the roll in the center of the roll support bar.
5. Standing in front of the machine, place the new roll in front of the machine with the free end of the material on the bottom and pointing towards yourself. In some cases feeding material from the top of the roll may improve tracking.
6. Insert the roll support bar through the new roll, with the end marked LEFT on the left.
7. If you don’t already have roll clamps mounted, mount them and tighten so the roll position can’t drift.

1. During initial machine installation or changing to a new roll width, loosen the screw on the right roll clamp, position it at the right end of the roll and retighten the screw – don’t strip the plastic threads but verify that the clamp resists moving.
2. Both roll clamps must be outside the roll to constrain roll movement.
3. Using two hands carefully mount the roll onto the U shaped support at the rear of the machine. Get help from a second person when appropriate.
4. See Material Threading next.

If the carriage is not fully left, gently push it there.

Ensure the material is even at both ends of the roll.

Standard method

1. While being CAREFUL NOT TO BEND them, remove the two hold-down strips as follows:
   1. Gently move the carriage to the far left if not already there.
   2. For machines shipped after 7/15/25: pull the center of each hold-down strip up about one inch so that it pops out of its recess.
   3. For machines shipped before 7/15/25: at the right end of the hold-down strips, remove the T-shaped spacer and the retaining clip.
   4. Lift each hold-down strip up and slide it right a few inches through the small window. Carefully pull the hold-down strip towards yourself an inch to clear the carriage and then to the left and place it on the table.
2. Pull out and cut off any wrinkled or creased material with a scissors.
3. Use a short piece of tape to attach the material to the top of the feed idler bar. Make sure the material is aligned with the roll laterally. Turn the feed idler bar manually (or use the Jog menu) to move the tape backwards, then through the pinch rollers and around to the top of the bar. Remove the tape.
4. Locate the rear hold-down strip. If one end has a shallow bend, make sure the bend is on the left and ramping up. Pass the rear hold-down strip a few inches through the small window on the right side and then under the carriage bearing and into the recess in the left panel.
5. For machines shipped after 7/15/25: pull the center of the rear hold-down strip up and press the right end down to seat it into the recess in the right panel.
6. Mount the front hold-down strip on the front square bar similarly, with the bend on the left and ramping up. Make sure the two hold-down strips cannot slide out of the window on the right – if they can, slide them further left so they can seat down on the right end.
7. For machines shipped before 7/15/25, remount the T-shaped spacer and the retaining clip described in the Assembly section.
8. Gently push the carriage far left. Manually turn the drive/O-ring bar slowly to retract the material to about the center of the rear square bar and then advance forward to verify that the material passes unobstructed over the front square bar and under the hold-down strips.

If this is the first use of the machine:

1. Advance the film 1-2 inches in front of the aluminum bars. Manually move the carriage slowly to the right and back to far left home to verify a successful cut.
2. Set the length to 1 inch to avoid wasting material. Press [✓] to test automated cutting.
3. If the rotation of the roll is overshooting after a cut, resulting in drooping material slack between the roll and the cutting area; or you are cutting elastic material:
   1. Remove the roll support bar with the roll from the machine.
   2. Remove the screw on one end of the tube and remove the small steel washer. Reverse the bearing so it will be flush with the tube endcap. Screw the bearing back on and verify that the bearing does NOT spin freely. This will create friction to prevent the film from unwanted rotation. If needed, repeat with the other end or consider using a roll brake accessory.

Scissors method

If you prefer, you can thread new rolls without removing the hold-down strips as follows: Cut the material at an angle with a scissors. Advance the material to just behind the rear hold-down strip. From the front, slip a business card between the hold-down strips and over or under the material as needed. Gently lift the rear hold-down strip while rotating the feed idler bar to feed the material.

For models shipped before 10/1/25, the blade does not normally rotate during cutting so manually rotating it can bring it to a sharper segment.

1. Use gloves to protect your hands from the sharp blade.
2. Unplug power.
3. Remove the front hold-down strip and front square bar.
4. Gently slide the carriage to the center.
5. Rotate the carriage up for access to the blade.

• To mount the machine on a wall, consider a shelf like the Vevor 12 x 36 in. Be sure that the machine can not slide off the shelf by adding appropriate constraints.
• Usually one O-ring per foot but not less than two suffice. You can try more to correct feeding issues. Changing the number of O-rings may require recalibrating.
• For unattended cutting, you have a few options for capturing the cut sheets.
  • The simplest is to place the machine near the edge of a table and let sheets drop to any lower surface, to be stacked later.
  • A corrugated box slightly larger than the sheet size. Remove all but one of the top flaps which gets taped to the edge of the table in front of the cutter so sheets fall into the box.
  • Krexil can fabricate a custom metal slide attached to a table edge to collect the output.