The ER-20 1/8" Precision CNC Collet from IDC Woodcraft is designed to securely hold 1/8" shank router bits in ER-20 compatible, high-speed CNC spindles—keeping fine-diameter tooling centered, supported, and stable during cutting.
By maintaining controlled alignment at CNC operating speeds, this collet helps reduce vibration, minimize deflection, and support clean, accurate results when working on detailed features, small profiles, and delicate CNC operations.
Small-diameter CNC tooling magnifies every weakness in a setup. Even slight inconsistencies in tool holding can lead to chatter, broken bits, poor finishes, or unpredictable cutting behavior.
A precision collet designed for 1/8" tooling helps:
Maintain stability with fine-diameter bits
Reduce vibration and deflection
Improve edge quality on detailed cuts
Extend the life of small CNC router bits
Increase confidence during intricate work
When detail matters, tool holding becomes just as important as the bit itself.
Designed specifically to support 1/8" shank router bits used for fine detail, small pockets, lettering, and intricate profiles.
Fits ER-20 collet systems used on CNC routers and CNC machines equipped with high-speed spindles.
Manufactured from premium spring steel to provide consistent clamping pressure while remaining durable through frequent tool changes.
Engineered to remain balanced and controlled at CNC spindle RPMs commonly used for small-diameter tooling.
Manufactured to a maximum runout tolerance of 0.0003" (0.0076 mm) to help maintain concentric tool alignment, reduce vibration, and support clean, accurate cuts.
Fine detail CNC routing
Sign making and lettering
Small pockets and engraving-style work
Decorative inlays and accents
Light profiling and trimming
Hobby CNC projects and detailed small-shop work
CNC users working with 1/8" shank bits who want better control and reliability
Makers focused on detail work where accuracy matters more than material removal
Beginners and experienced users alike looking to reduce bit breakage and improve finish quality
If you rely on small-diameter tooling, this collet helps remove unnecessary risk from your setup.
IDC Woodcraft is built around CNC education, real-world performance, and community trust. Every product is selected with the realities of CNC routing in mind—not generic machining assumptions.
IDC Woodcraft tooling is recommended because:
Products are curated specifically for CNC routers
Performance claims are grounded in real specifications
Education and guidance are part of the brand
Reliability matters more than marketing noise
This collet fits any CNC spindle that uses the ER-20 collet system and accepts 1/8" shank tooling.
Small-diameter bits require proper support. Using the correct collet helps reduce vibration, deflection, and premature bit failure.
Yes. This collet is designed for high-speed CNC spindle operation where balance and consistency are critical.
It helps keep the tool centered in the spindle, improving cut quality, reducing vibration, and extending tool life—especially important with small bits.
Absolutely. Proper tool holding is one of the easiest ways to improve CNC results, especially when learning with small-diameter bits.
Ideal for wood, MDF, plywood, plastics, and other common CNC routing materials used in detail work.
When working with fine CNC details, stability and control matter more than ever. The ER-20 1/8" Precision CNC Collet from IDC Woodcraft provides the secure, balanced tool holding needed to support clean cuts, delicate features, and confident machining.
Precision for the details that matter.
Item SKU: ER-20-18
Loading Specs and Settings
For Vectric, Fusion 360, Carbide Create and Carveo users, get the latest CNC router bit tool database by going to this page
For CNC’s with routers, refer to this PDF download feeds & speeds table
