Think & Tinker, Ltd.
CNC router bits and carbide cutting tools with tutorials and technical guides

micrO-flute® Radiused Single Flute Thermoplastic Cutters (MP108) - 1/8 in. (0.125") shank

Wood / Plastic - Standard Length End-mills

The "O" flute geometry introduced more than a decade ago is one of the most efficient flute designs for cutting thermoplastics that has yet been invented. With a high rake angle and relatively low helix, O-flute cutters manage to cut acrylic, polycarbonate, ABS, PVC and a host of other sheet polymers at very high chiploads without raising a burr or fracturing the edges of the kerf. All of this while leaving a remarkably clean surface finish. The real surprise is that this revolutionary geometry also works incredibly well in wood and aluminum. One of the recurring complaints about O-flute tools, is that the high chipload results in "swirl marks" in the bottoms of pockets. For most applications, this is not a problem but, in the case of side-lit transparent acrylic panels, these artifacts can severely impact the quality of the engraved image. Our radiused micrO-flute tools virtually eliminate these cutting marks, yielding a smooth, near specular bottom finish.

  • Geometry - radiused micrO-flute®, 1-flute, up-cut, center cutting
  • Length - 1.5 in. ±0.010 in.
  • Diameter - nominal"±0.0005 in.
  • Flute tip radius - Diameter X 0.18
  • Shank dia. - 0.1250 in. (3.18 mm) +0.00, -0.0002 in.
  • Max. runout (TIR) - < 0.0005 in.
  • Max. depth of cut - EFL varies by diameter ±0.005 in.
  • Material - solid submicrograin carbide
  • Ring Set - 0.800 in. ±0.002 in. (optional)
  • Operating RPM - CNC certified operation 20k RPM to 100k RPM
Carbide micr-O 1-flute for softwoods and thermoplastics
0.0160in. micr-O
ULTEM cuts

Order over US$50 and get $5 off shipping!
Depth setting ring
Item # Description Unit Price Depth Ring Enter Qty.
MP108-0625-025FR  1/16 in. (0.0625 in., 1.600 mm) micrO-Flute radiused 1-flute upcut thermoplastic cutter, 0.250 in. max DOC, 1/8 in. shank, 1.50 in. OAL   $36.95    Sale Price: $28.95   
MP108-0787-031FR  0.0787 in. (2.000 mm) micrO-Flute radiused 1-flute upcut thermoplastic cutter, 0.313 in. max DOC, 1/8 in. shank, 1.50 in. OAL   $36.95    Sale Price: $28.95   
MP108-0938-040FR  0.0938 in. (3/32in. 3.32 mm) micrO-Flute radiused 1-flute upcut thermoplastic cutter, 0.400 in. max DOC, 1/8 in. shank, 1.50 in. OAL   $36.95    Sale Price: $28.95   
MP108-1250-050FR  0.1250 in. (3.18 mm) micrO-Flute radiused 1-flute upcut thermoplastic cutter, 0.500 in. max DOC, 1/8 in. shank, 2.00 in. OAL   $34.40    Sale Price: $26.95   
Enter the desired quantity (Enter Qty) then click on the "Add to Cart" Button.

Order your bits in 10-packs (10 of the same tool) and save 9% off the retail price

Open Monday - Friday, 08:30 to 16:30 Mountain Time.

Most orders received before noon ship within one business day,
subject to credit approval and item availability.
Orders with different billing and shipping
addresses may be delayed for address verification.