How to Use the 130mm Combination Ultra Mill for Wire and Flat Stock
By Pepetools - Precision Engineered Professional Equipment | Published: 2026-10-30
Category: How-to Guides
Learn to set up and run the 130mm Combination Ultra Mill for flat stock and wire, with practical steps for roller gaps, square and ring-shank grooves, and safe operation.
Quick answer
Use the flat area for sheet and flat stock, and the square and ring-shank grooves for wire. Set the roller opening with the gap adjustment before each pass, feed metal squarely, and reduce thickness gradually rather than forcing a deep pass.
Why the combination layout changes how you work
A combination mill puts flat and shaped grooves on the same roller, so you can move from sheet to wire without changing equipment. That convenience has a trade-off: the flat area is narrower than on a dedicated flat mill, and each groove is fixed in size. Plan your sequence so you use the flat area for the bulk of flat stock rolling and reserve the shaped grooves for wire and ring shanks that match the available sizes.
Ductile frame and gear ratio: what they mean at the bench
The ductile frame is designed to handle the load of repeated rolling, and the 4:1 gear ratio reduces the effort needed to turn the rollers. In practice, that means you can make controlled passes without fighting the handle, but it does not remove the need to anneal metal between passes. The gear ratio multiplies torque, not the metal's tolerance for work hardening.
Step-by-step: rolling flat stock and wire
- Mount and check the mill: Secure the mill to a sturdy bench so the handle clears the bench edge and the frame cannot tip. Check that the rollers turn freely by hand before you feed any metal. A mill that moves under load can pull metal in at an angle; fix the mounting first.
- Set the roller opening for your first pass: Open the rollers to slightly less than the thickness of your stock, using the gap adjustment. For flat stock, start with a pass that reduces thickness by a small amount rather than closing the rollers to the final dimension. If the stock does not enter easily, open the gap; never force it.
- Anneal and dry the metal: Anneal the metal according to its alloy, let it cool, and make sure it is dry and free of grit. Feed it squarely into the flat area with the roller width centered on the stock. Rolling hard, unannealed metal risks damaging the mill and produces uneven sheet.
- Roll flat stock in small reductions: Turn the handle steadily and let the gear reduction do the work. After each pass, close the gap slightly and roll again, annealing when the metal stiffens. Keep the stock moving straight so it does not skew. Stop and re-anneal as soon as the metal resists; continuing work-hardens it further.
- Choose the correct square groove for wire: Select the groove that matches your target wire size from the available square sizes: 1.0, 2.0, 3.0, 4.0, 4.5, 5.0, 5.5, 6.0, or 6.5mm. Start with a groove larger than your wire and work down in sequence. Skipping groove sizes can overload the mill and distort the wire.
- Form ring shanks in the ellipsis grooves: Use the half-round ellipsis grooves sized 2.5 x 1.3 x 1.25mm or 4 x 1.5mm for ring shanks. Feed the wire centered in the groove and take light passes until the profile is even. These grooves are fixed sizes; if your shank needs a different profile, this mill cannot produce it.
- Clean and store after use: Brush off metal dust and wipe the rollers dry. Leave the gap slightly open to avoid flat spots and store the handle where it will not be struck. Grit left on the rollers will mark every subsequent sheet.
Product facts
- 130MM Combination Ultra Mill with Ductile Frame: Roller width is 130mm and roller diameter is 65mm, with a maximum opening of 5mm. The wide roller supports flat stock rolling across a broad sheet, while the 5mm maximum opening sets the thickest stock you can start with.
130MM Combination Ultra Mill with Ductile Frame - 130MM Combination Ultra Mill with Ductile Frame: The flat area is 66mm wide with +/- 0.01mm tolerance, and the mill can produce metal foil as thin as .001 inch. That flat area is your working zone for sheet, and the fine tolerance supports consistent thickness when you take small, even passes.
- 130MM Combination Ultra Mill with Ductile Frame: Square wire grooves are available in 1.0, 2.0, 3.0, 4.0, 4.5, 5.0, 5.5, 6.0, and 6.5mm, plus ring shank half-round ellipsis grooves of 2.5 x 1.3 x 1.25mm and 4 x 1.5mm. You can roll wire to specific square sizes and form ring shanks without a separate mill, but only within the listed groove dimensions.
- 130MM Combination Ultra Mill with Ductile Frame: The mill is equipped with a 4:1 reduction gear box. The gear reduction lowers the force you apply to the handle, making repeated passes easier to control on hard or wide stock.
