Stone Edge Profiles Explained: KDRILLS Profile Wheels A to Z

An edge profile is the cross-section you machine into the front of a countertop. The KDRILLS stone line makes a wheel series for each common profile, and the data sheets are organized so you can find the right set from three facts: the profile letter, the slab thickness and the radius. This guide explains how to read them.

The sixteen profile series

There are sixteen profile pages on the site: A, B, D, E, F, FB, FV, FZ, G, GV, IS, O, Q, T, V and Z. The letters are the manufacturer's codes, not trade names for edges, so the reliable way to match one to your edge is to compare the wheel photos and the data sheet on each page. The wheels are made for marble and granite and run on CNC work centers. For a shape that is not on the list, use Wheels by Draw.

Slab thickness comes first

Each data sheet is split by slab thickness. Across the family the thicknesses are 20, 30, 40 and 50 mm. A profile that exists for 20 and 30 mm may not exist for 40 mm, so check this before anything else. For example, the A profile is listed for all four thicknesses, GV only at 40 mm, and Q only at 30 mm.

Radius

The radius is the size of the curve in the profile, and it is tied to the thickness. Ask for it by number, never by name alone, because two shops can call the same edge by different names. In the A profile, the 20 mm slab is listed with radius 10, the 30 mm slab with radius 10 and 15 (the 80 mm wheel exists at both), the 40 mm slab with 20 and the 50 mm slab with 25. B uses 20, 30 and 40 mm radii on 20, 30 and 40 mm slabs. O uses 15, 19 and 24, V uses 10, 20 and 25, IS uses 10 and 18, FZ uses 10, and Q uses 9. T is listed at radius 3 on every thickness. F and FB list two radii per wheel, for example 23-10 and 33-17 for F and 15-7.5 and 20-10 for FB. The E sheet lists radius 40 for the 20 mm slab and adds a maximum bevel column with the values 15, 11.5 and 8. FV, G, GV and Z are listed without a radius figure.

Diameter and hole

The usual wheel is 120 mm in diameter. A, B and V also have 80 mm wheels, T has 40, 60, 80 and 120 mm, Z has 60, 80 and 120 mm, and O reaches 140 mm on a 50 mm slab. The hole is 22 or 35 mm; match it to your spindle. The Z sheet also lists ISO40 tool holders; send us your holder type.

The position sequence

Each profile is a set of wheels used in order, and the position tells you where each one belongs. The standard set is one segmented wheel and three continuous band wheels, plus a set of rubber or resinoid polishers. The data sheets list four diamond positions, 1B (segmented), 2H, 3N and 4S, followed by resin polishing. In general, roughing comes before finishing, and each position runs before the next one.

Resin polishing

After the diamond positions, the data sheets list resin polishing wheels by grit, 600 and 1000 on most profiles. On the 20 mm, 120 mm table of the A sheet they are listed as positions 6 and 7; other tables list them by grit. Rubber polishing is available on demand. Calibrated wheels are available too.

How to order a profile

Give us the letter, the slab thickness, the radius, the wheel diameter, the hole and the machine. A profile drawing with the slab thickness is enough for us to check against the data sheets. Send it through the contact page or to [email protected]. For the order in which the wheels run, see the guide to the tool sequence for a countertop edge. For small sink cut-outs, ask about the Profiling Routers.