FAQ

1. Question:

What is included in this 20 in 1 set?

Answer:

The set includes:

1 × aluminum alloy handle (11.5cm length)

20 × stainless steel flat-bottomed circular hole maker blades (10 different calibers, 2 pieces each)

The blades range from 1.0mm to 6.0mm in width, with a uniform thickness of 0.3mm. This allows you to create holes of various diameters for your model building projects.

2. Question:

What are the available blade sizes?

Answer:

The set includes 10 different caliber blades, covering widths from 1.0mm up to 6.0mm. Each caliber comes with 2 blades (hence 20 pieces total), providing replacements or allowing you to work with different sizes simultaneously. The specific size increments are designed to accommodate various round etching sheet diameters commonly used in model building.

3. Question:

What materials are the tools made of?

Answer:

Handle: Made of aluminum alloy – lightweight, durable, and corrosion-resistant.

Blades: Made of high-quality stainless steel with a double-sided open edge design for smoother and more efficient drilling.

4. Question:

What is the advantage of a "flat bottomed" hole maker?

Answer:

Unlike standard drill bits that create pointed or tapered holes, this flat-bottomed tool creates perfectly flat-bottomed circular holes. This eliminates the need for additional grinding or sanding to flatten the bottom, making your work more efficient and ensuring that round etching sheets sit flush and level in the hole.

5. Question:

What is the thickness and size of each blade?

Answer:

Each blade has a thickness of 0.3mm. The blade size (single) is approximately 6 × 2.5mm, but the working width varies from 1.0mm to 6.0mm depending on the caliber selected. The blade tips are designed with double-sided cutting edges for cleaner cuts.

6. Question:

How do I use this circular hole maker?

Answer:

Step 1 – Select the appropriate blade size for your needs and mount it onto the handle.

Step 2 – Align the blade tip with the center of the target circle. Hold the blade perpendicular to the part surface and press down while rotating reciprocally to cut the hole.

Step 3 – Apply glue to the circular hole location.

Step 4 – Use tweezers to attach the circular etching sheet into the hole.

This method ensures precise, clean hole placement for decorative or functional inserts.

7. Question:

What types of models is this tool suitable for?

Answer:

This tool is widely applicable for model building, Gundam kits, scale models, resin kits, plastic parts, DIY hobby projects, and jewelry crafting. It is ideal for creating circular openings in plastic sheets, resin casts, and other modeling materials where round etching sheets or inserts need to be installed.