Explore VT machining's CNC Boring capability. Boring enlarges and finishes existing holes to precise diameter, roundness and surface finish.
Boring enlarges and finishes existing holes to precise diameter, roundness and surface finish. Every job is programmed from your geometry, run on calibrated equipment and checked against the print before it ships.
Design your CNC Boring part online — free 3D + 2D drawing builder
No CAD licence, no sign-up, no cost. Set your metal, dimensions and features in the browser, see the part update live in 3D, switch to 2D to add dimensions and tolerances, then send the drawing straight to our cnc boring team for a quotation.
Live 3D preview — rotate, zoom and explode the model as you type
Built-in 2D drawing sheet with dimensions, tolerances and notes
Download the preview or send it with your RFQ in one click
Free to use, unlimited revisions, nothing to install
VT CNC Machining3D
CNC Drilling & Tapping BuilderConfigure drilled, reamed, tapped and counterbored hole patterns in metal plates: single holes, linear arrays, matrix grids or custom coordinates. Every builder includes the Freeform Corner & Region Editor: cut or add material of any shape directly on the 3D model, then submit an RFQ.This tool is for visual configuration only. Final dimensions, tolerances, materials, coatings, and manufacturability will be reviewed from your drawing or specification.
Paste a configuration JSON (from Export) or a copied RFQ summary. The product and all recognized parameters are applied automatically; unknown parameters are listed and skipped.
Answer the choices below step by step — every value comes from the real option list, so it always renders.
Save the current configuration under a name and recall it any time on this device.
2D PreviewYour browser is showing a simplified engineering preview because WebGL is unavailable.
CNC Drilling & Tapping Builder
Interactive visual preview for custom CNC machining configuration.
CMD
Import Code (One-Click Recall)
Save this code before you leave — it is the only way to recall this exact model. If you lose it, your configuration cannot be restored.
SUBMIT RFQ — ENGINEERING REVIEWYour current 3D configuration and specification summary are attached automatically. Attach a drawing if you have one.
FREQUENTLY ASKED QUESTIONSWhat hole patterns can be drilled or tapped?
Single holes, linear arrays, matrix grids or custom coordinates, as through, blind or counterbored holes. Holes can be drilled, drilled and reamed, or drilled and tapped with metric (M2-M10) or UNC/UNF threads.
How accurate are hole positions?
Hole position tolerance is captured as an engineering requirement and confirmed at review; positional tolerances in the +/- 0.02 to 0.05 mm range are routine for CNC drilling.
CNC Boring is a subtractive process in which the workpiece rotates in a spindle while a stationary tool removes material, generating cylindrical geometry — outer diameters, bores, faces, tapers, grooves and threads — with excellent concentricity and roundness.
Our shop runs CNC Boring daily, which means proven parameters and short setup times. Boring enlarges and finishes existing holes to precise diameter, roundness and surface finish. Upload your geometry — or draw it in the free builder on this page — and we will come back with pricing and DFM notes.
How CNC Boring Works at VT machining
The metal bar or billet rotates in the spindle while single-point tools shape outer diameters, bores, faces, grooves and threads. Constant surface speed control keeps cutting conditions stable from large to small diameters.
We start from your supplied geometry and tolerance scheme. The setup is designed to minimise re-clamping, which protects positional accuracy across features. A first article is verified against the drawing before the balance of the batch is released.
1
Send your drawing
CAD model, PDF print — or a drawing you build free on this page. We reply with feasibility, price and lead time.
2
Setup & tool selection
Chucking or bar feed, insert geometry and constant surface speed are set for the material.
3
CNC Boring run
First article is verified against the print before the balance of the batch is released.
4
Inspection & dispatch
In-process checks plus final inspection, with CMM reports, mill certs and FAIR on request.
CNC Boring Tolerances & Surface Finish
Turned metal holds diameter tolerances to about ±0.005 mm with concentricity within 0.01 mm and good roundness. Turned finishes of Ra 0.4–0.8 µm are achievable with finishing passes and sharp tooling.
The tightest tolerances are reserved for the features your drawing flags as critical. Share your tolerance scheme and we will confirm what is realistic before quoting.
CNC Boring — capability summary
Diameter range
Ø1–400 mm
Max length
Up to 900 mm between centres
Diameter tolerance
±0.005 mm
Concentricity
Within 0.01 mm
Surface finish
Ra 0.4–0.8 µm
Lead time
Prototypes 5–10 days · production 10–20 days
Documentation
Dimensional report, material certificate, FAIR on request
Figures are typical in-house capability. Send your drawing and we will confirm what is achievable for your specific part.
CNC Boring by Metal — Choose Your Material
Each material page covers how CNC Boring behaves in that alloy, what tolerances are realistic and where the parts are used.
We are happy to suggest design tweaks that improve manufacturability. Consistent diameters, standard thread forms and avoiding extremely long, slender features help metal turned parts stay concentric and economical. If you send your model early, we will return practical DFM feedback before you commit to production.
Secondary Operations & Finishing
Finished metal parts can move straight into secondary operations under one roof. Typical add-ons are deburring, passivation, anodising, plating, blasting, polishing and laser marking. We coordinate the whole chain so you receive complete, inspection-ready parts.
CNC Boring Quality & Inspection
We control quality throughout the process, not just at the end. In-process checks plus final inspection — including CMM where specified — keep every metal part to print. Inspection reports, material certificates and first-article documentation can be supplied on request.
Industries That Order CNC Boring
CNC Boring parts made by VT machining go into the sectors below. Each page lists the typical components, preferred alloys and the tolerance expectations for that industry.
Starting your project takes one email. Send your CAD or 2D drawing, the metal grade and condition, the quantity and any finish or inspection requirements. We respond quickly with price, lead time and any DFM notes, in clear English.
Have a drawing ready? Send it with your quantity and material for a quotation, usually within one business day.
What surface finish is achievable on with CNC Boring?
Surface finish on the part is controlled to your specification; we confirm the achievable Ra against your callout.
How clean are the edges produced by CNC Boring on ?
Machined the metal edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
Which industries use CNC Boring parts?
CNC Boring parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise components are required.
What tolerances can you hold for CNC Boring?
Achievable tolerances for CNC Boring depend on the alloy, geometry and feature size. Turning holds diameter tolerances to around ±0.005 mm with concentricity within 0.01 mm. Exact figures are confirmed against your drawing callouts.
Can VT machining make custom parts to my drawing?
Yes. CNC Boring is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.
What material thickness or size range suits CNC Boring?
Turned the material parts are produced from bar or chuck stock across a wide diameter range.
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