DIY Holster Fabrication Kit 87 Pcs - Complete Thermoform Tool Set

In this review the RoundFunny DIY Holster Fabrication Kit is judged as a practical, all-in-one starter set for makers who need thermoform sheets and hardware to build custom knife sheaths and holsters. The single biggest reason to buy is the completeness of the kit: it includes thermoformable sheets, molding foam, fasteners and an eyelet hand setter so a user can shape, finish and assemble a holster without sourcing many separate parts. This review focuses on real workshop use, material heat ranges and how the kit performs for basic holster creation.

Key Features

• 87-piece kit: Supplies a full range of parts including screws, fasteners, washers, eyelets, sheets and tools so hobbyists can finish a project without extra trips to the hardware store.
• Thermoform sheets: The 11.81 x 7.87 x 0.08 in sheets mold at 300-375 F, allowing a durable shell to be formed around knives or tooling with predictable results.
• Molding foam included: The 12 x 8 x 1 in thermoform foams stand up to about 200 F and create a clean, contoured form to press the heated sheet into for consistent shapes.
• Eyelet hand setter: The kit's eyelet setter lets users install rolled eyelets with a light hammer tap, producing a neat, finished edge for belt holes and attachment points.
• Hardware selection: Includes 10 cross recessed screw heads, 10 slotted fasteners and 10 rubber washers in sizes suitable for leather holsters, knife sheaths and belt clip mounting.

Who It's For

The kit is aimed at DIYers, holster makers and security or outdoor professionals who prefer to craft a custom carry solution, or who need an affordable set of thermoforming materials and fasteners to prototype designs. It suits users who already own a basic heat source and hammer for forming and setting eyelets.

Those who should look elsewhere are advanced custom holster manufacturers requiring higher thickness sheets, precision rivets or industrial tooling, and buyers needing detailed color-matched finishes or injection-molded components rather than hand-formed shells.

Pros & Cons

Pros

• Comprehensive parts set covers most needs for a single holster build, reducing additional purchases.
• Thermoform sheet specs (300-375 F) and included foam make shaping predictable for first-time molders.
• Eyelet setter and simple fasteners allow quick assembly and clean finished edges with basic tools.
• Durable materials such as iron, copper and CPVC engineering plastics give the kit practical longevity.

Cons

• The included sheets are 0.08 in thick, which may be too thin for some users seeking heavier-duty retention or extra rigidity.

Specifications

Kit contents	87 pieces including screws, fasteners, washers, eyelet setter, tools, 2 sheets, 2 foams
Thermoform sheet size	11.81 x 7.87 x 0.08 in
Molding foam size	about 12 x 8 x 1 in
Sheet heat range	300-375 F
Foam heat resistance	about 200 F
Screw head size	0.25 in cross recessed, 0.25 in slotted
Rubber washer size	approximately 1.67 in

Our Verdict

The RoundFunny 87-piece DIY Holster Fabrication Kit is a sensible value for hobbyists and first-time holster makers who want a ready set of thermoform sheets, molding foam and assembly hardware. It removes the hassle of sourcing basic parts, performs well within its heat and size limits, and is a practical choice when building custom knife sheaths or belt holsters on a budget.

Frequently Asked Questions

Can the thermoform sheets be reheated and remolded?
Yes, the sheets can be reheated within their 300-375 F range and reshaped, though repeated heating may gradually affect finish and stiffness.

Will the eyelet setter work with standard rolled eyelets?
Yes, the included eyelet hand setter is designed to install standard rolled design eyelets with a light hammer tap for a secure finish.

Are the screws and washers suitable for belt clip mounting?
Yes, the 0.25 in screws, slotted fasteners and rubber washers are appropriate for attaching belt clips and securing holster components.