Had a mistake happen and ordered some medium soft pourasol. Didn't notice till we went to inject it in the mold and realized it wasn't the same were used to. I really like the medium so I was wondering if anyone out there has ever mixed hard with medium soft to get a little harder plastic. I understand you can get hardened but was wanting to see if just buying harder plastic and mixing it would get the same result. I'd appreciate any info anyone may have!