Presently TADACT has about 50 active volunteers who undertake the design and manufacture of aids in their own workshops. Volunteers range from engineers, skilled tradesmen and women to gifted amateurs.
| metalwork | woodwork | furniture |
| fibre glass/plastics | electronics | drafting |
| communications | telephony | sewing |
| control systems | computers | electrical work |
| upholstery/webbing | industrial design | hydraulics |
| pneumatics | automotive | optics |