The main reason that the garage are able to do the repair more efficiently than the normal DIY motorist is not just the experience but having the correct tools for the job.
The £40 per hour or more garages charge for the repair may be more economically utilised buying the right tools for the job allowing you to do a professional job yourself and have the tools ready for future use by yourself or friends in future.
Buying soft steel chinese tools from the Pound shop is not the answer because if a job is worth doing then it is worth doing right and our quality hardened tools will allow you to do a professional job.