Thank you Marty for your advice.
I have attended a course several years ago, and have also done a lot of reading online. My main problem is that I live offshore in the UK and there aren't many options to view or purchase quality sandblasting equipment suitable for glass anywhere near my home. The system that I have found most appealing from the information available online is the Rayzist 2034VXR very impressive system, unfortunately it is beyond my budget as I am only going to be using it for occasional use at present. The Rayzist 1924 cabinet and recycling unit is cheaper but much smaller, I cannot find videos to view or much info from users for that model to be able to figure out if it is suitable for use on glass projects up to 40cm square. The Glastar sit down cabinet and system is also appealing, I cannot find any videos to view it in use either.
Both these models are available to buy through companies in the UK, I just wanted to get some more info from anyone who has experience of using either or both the Rayzist 1924 and the Glastar sit-down cabinet to compare these models. Any advice will be very helpful.