I cut tubes 4\ Id .025 thick into rings using brass sleeve and blades. To avoid slivers how much bigger than the sleeve can the tube be?
This depends on various factors: 1 method of recutting from fully automatic to pedal cutter 2 amount of burr on end of tube 3 number on to be cut with each stroke 4 ID, length, and wall of the tube We use cutting mandrels from .005 to .025 smaller than the winding mandrel depending on the above factors Paco has delivered more than 800 Automatic, Hopper Fed, 3-Spindle, Multi- Knife Tube Recutters to the tube, core and composite can industry. Many cutting diameters and wall thicknesses as you are describing for products like ice cream lid rings. We would tool our machines with Nylon Sleeve Type Mandrels and Paco Super- Sharp Circular Knife Blades mounted and locked on a driver knife bar with spacers between each blade along with a back-up roll assembly. We would also maintain a 0.012 clearance between to tube I.D. and the cutting mandrel O.D. Does not sound like an Appleton customer so I suggest they contact the machine builder for assistance. For an Appleton the clearance will be .060 b
