DSPIAE Electric Grinding Pen

The DSPIAE ES-P is a cordless electric grinding pen designed for scale modelers who need precise material removal in tight spaces — seam lines on Gunpla, mold marks on resin parts, surface prep on plastic kits, or fine engraving work on any hobby material.

At 58g it handles like a pen rather than a power tool, which means you get direct tactile feedback and control over every pass. Three speed settings let you match the RPM to the task: slow for delicate engraving, medium for seam removal, full speed for aggressive grinding or sanding with the disc attachments.

Speeds and power

• Speed 1: 5,000 rpm — fine engraving, light surface work
• Speed 2: 10,000 rpm — seam removal, panel line cleanup
• Speed 3: 18,000 rpm — aggressive grinding, sanding with discs

Battery and charging

• Approximately 1 hour of runtime per charge
• USB charging — no proprietary cable needed
• Digital display shows battery level and selected speed

What you can do with it

• Remove mold lines and sprue attachment marks from plastic and resin
• Engrave panel lines, rivets, and surface detail
• Open and shape cockpit interiors, hatches, and vents
• Prepare resin prints for painting by removing support scarring
• Sand curved or concave surfaces using the disc attachments
• Detail work on diorama elements and scratch-built parts

Which variant to choose

ES-P Grinding Pen — the pen only, for modelers who already have grinding bits or want to source their own attachments.

Bundle 1 (Best Seller) — pen + sanding discs in 5mm diameter, grits #400 / #600 / #800 / #1000, plus rod. Best for detail sanding on small surfaces and Gunpla work.

Bundle 2 — pen + sanding discs in 10mm diameter, same grits. Better for larger flat or gently curved surfaces on scale model kits and resin parts.

Specs

• Model: DSPIAE ES-P
• Speeds: 5,000 / 10,000 / 18,000 rpm
• Weight: ~58g
• Charging: USB
• Battery: ~1 hour runtime
• Compatible materials: plastic, resin, light metal, foam

It can also be combined with self-adhesive sanding disks for a very convenient sanding experience.