Batch of Safe Hinges

Steel Safe Hinges

It was great to help out another local CNC machine shop by milling these steel safe hinges, operations included drilling, tapping and profiling.

Aerospace Phosphor Bronze Tooling

Aerospace Tooling

Probably one the the most interesting jobs we have done recently were these phosphor bronze parts we machined for a aerospace company, whilst the parts are simple in aesthetics they were machined to tight tolerance of just 0.001" as there are used in the tooling which is used to manufacture jet engine components, we can't disclose the exact components.

Phosphor Bronze Tooling

Aerospace Tooling

Machining Centre 4th Axis Base Plate

Machining Centre Sub Plates

Some of our work also includes machining parts for other machining centres that are to be equipped with a 4th axis, here we are machining the base plates for the 4th axis and tail stock. These parts are to be installed at a well known manufacturer of motorcycle components.

4th Axis Sub Plate

4th Axis Sub Plate CAM Programming

4th Axis Sub Plate OP1



Astra VXR Brake Caliper Adaptor Brackets

When you increase the power of your Astra H VXR its a wise decision to also improve the braking as the car will now accelerate faster stopping can become a problem, we developed these adaptor brackets to facilitate the fitment of the more powerful 4 pot Brembo brake calipers that are fitted to the Clio RS, the original brake disc on the Astra is retained however new front brake lines will be required and we can manufacture these in-house for you.

These adaptors are manufactured from high strength T6 6082 aluminium alloy and fitted with stainless steel wire inserts for additional thread strength.

These adaptors also fit the Zafira VXR




High Performance Braided Brake Lines

We are now manufacturing in-house dash 3 braided brake lines for most makes and models of cars. Our lines feature;

  • PVC Coated Stainless Steel Braided Line with a choice of tantalizing colours
  • Stainless Steel Fittings
  • Lifetime Warranty

All lines are hand made in-house by HEL trained engineers using the same techniques as if they were manufactured at the HEL factory, we supply front sets, rear sets and full sets, we can also make you custom lines for brake conversions.

We stock fittings for most makes and models, if your needing a set of brake lines in a hurry call in and see us, most can be made whilst you wait.


Braided Brake Lines


Bristol Hercules Sleeve Valve Engine

We’re proud to have been involved in the manufacture of a part to remove a seized engine sleeve on the infamous Bristol Hercules Engine.

Parts we manufactured were used as a liner removal tool, usually we don’t know what the parts are that we manufacture so when our customer shared these images with us we were really touched and pleased we were able to help.



Sport Grooved Brake Discs

A strong heritage of our business is the machining of sport brake discs and we are still very much involved in this process.

We machine a wide variety of brake discs for various applications and reasons, mainly to improve the vehicles braking performance but also to enhance the looks of the brake discs.

The type of designs we offer also vary from the common dimpled and grooved to more modern designs such as the C Hook and J Hook as used by Alcon brakes. We also machine brake discs for third party companies within the automotive parts industry, from small specialists to large motor factor groups.

We are also able to machine brake discs for you, so your welcome to bring along your own brake discs for cnc slotting as we offer this as a machining service to the public, typical turn around is normally within 24 hours.

General designs we offer are;

  • C Hook
  • J Hook
  • Dimpled and Grooved
  • Sport Grooved (6 linear slots)
  • Performance Grooved (6 radial slots)
  • Cross Drilled

A typical price for machining a pair of brake discs is £36.00 for diameters up to 345mm for dimensions larger than 345 the price will be tailored to your requirements.



Hydraulic Flange Manufacturing Stage 8

Hydraulic Flange Units

We have recently completed these hydraulic flange units, manufactured from mild steel the largest unit started out just short of 72KG, a hefty chunk of material.

Both these items were machined on one of our 3 axis machining centres without any 4th axis, during machining we used a series of tools including roughing cutters, finishing cutters, chamfer mills, spot drills, carbide drills and 1/4 BSP thread formers, we opted for thread formers over thread cutting to produce a longer lasting thread, threads created by forming are also stronger than cut threads.

Hydraulic Flange Hydraulic Flange Units


Vauxhall Astra 2.0 VXR Engine Block Modification

We have been developing a block modification for the Vauxhall Astra (H) 2.0 Turbo VXR Z20LET Engine to strengthen the cylinder bores by converting the open deck block into a closed deck block for a customer who has recently had two engine block failures as a result of higher power outputs. The latest engine block failure was built at a so called "reputable" tuning shop specialising in these models, unfortunately for customer the block failed just weeks after being built and re-mapped.

After inspecting the failed block it was more than obvious that the block needed to be strengthened in the water jacket area. We set about this by accurately Laser Scanning the engine block face to pick up on the all the features on the block face and then we introduced the scan into our CAD software, from there on we begin to work on the design of the part to strengthen the block. Initially we were looking at a "part" wedge design but after some consideration we opted for a full wedge, as we believed this would offer superior strength and also have less possibility of moving after fitment.

Our next step was to machine the engine block to match that of the new parts to be inserted, machining slightly undersize to produce a interference fit.

To begin we open up the coolant ports surrounding the liner, the reason for this is to give a machined finish as currently its a cast finish so is rough and secondly to ensure the profile matches that of the wedges to be inserted perfectly.


What we offer

  • CNC Machining


  • Laser Marking

  • Bead Blasting

  • Aluminium

  • Phosphor Bronze

  • Steel

  • Stainless Steel

Contact Info

Unit 1 Fan Road, Staveley, Derbyshire, S43 3PT

01246 720215

Mon - Fri: 9:00am - 6:00pm
Saturday: 9:30am - 2:00pm
Sunday: Closed

Copyright 2018 Halo Precision Engineering LTD ©  All Rights Reserved

Company Registration Number: 11667662, VAT Registration No. GB338125508