Thats come up pretty good. Has a bit of gran as you experienced already. Nice job there
Dream mat in a Walbanker
- Thread starter bundyjd
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Thanks Dustin, Basically to achieve what I have was to lubricate the cutting blade and the material along the line of the cut. The cutting action needs to be lightning fast (a snap cut) so that the material has little time to deform. A fast cutting action produces a clean straight cut, a slow carefull cutting action is the least successful and produces a wavy cut, this is because the material is so elastic that material adjacent to but outside the cut line is stretched and is pulled into the line of the cut and then downwards by the pull of the blade and this continues until the shear occurs. I do have an idea of how to overcome the surface deformation and I'll try it when i can bring myself to destroy my last fragment of Dream Mat :|
I've been cutting 6 inch long pieces only - the challenge is to cut 36 inches which is the full length of the mat. The cutting speed will be slower towards the end of the cut because of increased resistance over the length of the material slowing down the cut speed so to be successful I have to do control the elastic movement of the material so we have a straight cut for the total length and not a wavy edge at the finish, however as I said I do have an idea of how to overcome that....... watch this space as they say.
casper
I've been cutting 6 inch long pieces only - the challenge is to cut 36 inches which is the full length of the mat. The cutting speed will be slower towards the end of the cut because of increased resistance over the length of the material slowing down the cut speed so to be successful I have to do control the elastic movement of the material so we have a straight cut for the total length and not a wavy edge at the finish, however as I said I do have an idea of how to overcome that....... watch this space as they say.
casper
All makes perfect sense mate same as drag with a wet blade. Will have new moulds soon anyway mate
G0lddigg@ said:
Hmmmmm! - I'm working towards cutting an 8 inch mat in half without trashing it - I'm conflicted! probably should wait for 4 inch mats :|
Ill send you some more mats to cut if you like mate. Ive got some short 12 inch sections you can play with
G0lddigg@ said:
:8 I'd be happy to oblige - this is my test equipment (I'm sure that there will be another one somewhere cos Noah put 2 of everything on the Ark)
Thats a beast. The one we use is 3 tonne and electric but you cant get close to it with a bit if rubber has to be supported
Good point marked. Ive got some mat in the freezer for testing purposes and its hard
Marked said:
Hmmm! ..... hadn't thought of that!
casper said:
11 hours in the fridge freezer (-6) and the mat is only marginally less flexible. Will try the deep freezer (-20) next.
casper
Haha casper the urethane is good to -40 but surely out of the freezer it has kess drag on the cut? Interesting test anyway
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