Pens and Pencils | Reviews and Data

Pilot S15 Mechanical Pencil

The Pilot S15 isn’t actually a mechanical pencil that you can buy — it’s the combination of a Pilot S20 upper and a Pilot S10 lower.

This combination gets you the knurled metal grip of the Pilot S10 and the real wood body of the Pilot S20.

How to Make a Pilot S15 Pencil

While this is a pencil “hack,” it is an excellent one that is without any real flaws aside from the price.

The hack is very easy to do with these steps:

  1. Remove the front metal piece from both pencils, set aside
  2. Pull off the metal grip of the S10, it will slide off freely
  3. Twist off the wood grip of the S20. It might take some pressure but should not require any tools
  4. Put the S10 grip on the S20 and replace the metal front piece tightening it as much as possible.
  5. If you are satisfied with the grip on the S20 then you are done, but if it wobbles, remove the grip and wrap tape around the body of the S20 until the S10 grip can just be places over the tape.
  6. With the built-up tape preventing any wobble, add the S10 grip back and tighten the front piece

The downside of this combination is that the S10 will no longer be able to be used, so a very good pencil (one many people prefer to the S20) will no longer be usable. This is the case because the grip of the S10 fits the S20 but the grip of the S20 does not fit the plastic body of the S10.

Pilot S15 Mechanical Pencil Information

Street Price Check Price
Manufacturer Pilot
Barrel ColorRed Wood, Brown Wood
Barrel MaterialWood
Body Diameter (mm) 9.0
Grip Color Silver
Grip Material Metal
Knurled Grip? Yes
Grip Diameter (mm)
Body Shape
Lead GradesHB
Capped or Retractable No
Lead Color Graphite
Lead Size (Diameter) 0.5 mm
Similar To:
Eraser Refillable?Yes
Clip MaterialMetal
Pipe Retractable?Yes
Cleaning Rod?Yes