Equipment/Colchester Master Lathe
| Metal Lathe (Colchester Master) | |
|---|---|
 | |
| Sub-category | Metalworking |
| Status | Good working order |
| Last updated | 24 July 2025 07:23:24 |
| Training requirement | yes |
| Training link | Lathe Training |
| ACnode | yes |
| Owner | LHS |
| Origin | Donation |
| Location | Metalworking Shop |
| Maintainers | Machine Shop Team - lead is Toby |
This is a Colchester Master 3250 metal lathe, used for many kinds of turning operations on (mostly round) metal parts
The lathe is ACNode controlled and requires training. For information on the training process see Lathe Training
For some information on the current range of tooling and accessories, see Metal Lathe Accessories
A few house rules for using the lathe:
- No wood (sawdust gets into all the moving parts, soaks up moisture and oil and then becomes quite abrasive)
- No use of compressed air for cleaning (it sometimes drives chips past the chip guards and into the moving parts)
When you are finished with the lathe please ensure all chips are removed from the ways and carriage - first by brushing down with a brush, then hoovering using the nearby wet & dry vacuum, then finally wiping down with a rag
Useful Specs
Toolholder: Dickson S2 (Tool holding slot 25 x 17mm)
Headstock Taper: MT5
Tailstock Taper: MT4
Maintenance
Coolant
Check coolant levels preferably before the coolant pump stops pumping. If it reaches that point, the reservoir can take a little over ~20L of 5% coolant diluted down with tap water: measuring jug & funnel can be found in the cupboard.
Mix up coolant in a clear white 20L plastic can. If there is leftover mixed coolant it can be stored in this can.
There are various coolant products that will work, the last we purchased (2025-07-16) was Castrol; Hysol T 15
Datasheet: File:Castrol; Hysol T 15 (High Performance Semi-Synthetic Metalworking Fluid).pdf
Headstock Lubrication
The headstock is lubricated with ISO VG 37 Hydraulic Oil (originally specified as Shell Tellus T 37). We are currently using BP Energol HLP-HM 32 (green can stored in the machine shop).
The level indicator is in the back of the headstock and not easily accessible, but there is a bubble indicator next the chuck where you should see oil flowing - if not it likely needs a top up.
Carriage Lubrication
The carriage gearbox uses ISO VGT 68 slideway oil. Because of the automatic oilers this is used up frequently and will need regular topping up.
The level indicator is down and to the left hand side of the carriage
Risk Assessment - Metal Lathes
This risk assessment is intended to provide guidance on the risk associated with the above equipment and activities in normal use. Please also check general risk assessments for the space as a whole. Any discrepancies, errors or concerns should be raised with the document maintainers or trustees - do not edit this assessment directly. For responsible persons and last update, see 'version log' of the assessment page.
Activity
Turning metal or suitable plastics on the metal lathe
Signage
Understanding Risk Rating
LOW - Ensure current control measures are in place and continue with activity
MED - Control measures may be adequate, co-supervision is recommended
HIGH - Do not undertake activity without further consultation with area specialists
Risk Assessment
| Identify Hazards | Who May be Harmed and How | Severity | Control Measures | Likelihood | Risk Rating |
|---|---|---|---|---|---|
| Incompetent user | User, Bystander | HIGH | Users must not use tools that they are not competent to use. Members must challenge use that they believe is dangerous. Users should read the user manual where applicable. Users must read the risk assessment before using a tool. Users will be advised during induction which tools they will need supervision or an induction to use. | LOW | MED |
| Entanglement | User | HIGH | User must not wear gloves User must remove all jewellery. User must tie back hair User must not wear flowing clothes User must not touch the workpiece whilst the lathe is switched on. | Medium | Medium |
| Ejection of workpiece | User, Bystander | HIGH | User will test the workpiece is in the chuck/ centres/ faceplate securely. User will test the integrity and suitability of the workpiece for turning before use. Use of potentially less secure work-holding methods (faceplate, between centres) restricted to advanced users. | Low | Medium |
| Noise | User of the tool, users of the room. | LOW | Ear protection is advised for heavy cutting. | LOW | LOW |
| Flying swarf | User of the tool, users of the room. | LOW | Eye protection must be worn whilst using the metal lathe Eye protection must be worn by all users of the workshop. | LOW | LOW |
