I want to make various cushion-type objects with the aim of improving partner's ability to sit (e.g. in the car) so that she might actually be able to do so for more than a few minutes.
What I need (I think) is some memory foam with finger-like protrusions. I have a mattress topper which has these fingers but don't want to chop that up!
Because I am probably going to be iterating several designs (that sounds a bit grand for lash-up experiments!), I am trying to locate a source of relatively inexpensive foam - possibly offcuts or seconds. Once I know what I am doing, whether it works at all, then I won't mind paying for quality material. Any suggestions?
Also, is it possible to glue memory foam to itself (e.g. to shape a seat pad)? What glue? Techniques?