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Search: Posts Made By: pblackburn
Forum: General - MM Build Thu 06 August 2015, 10:38
Replies: 154
Views: 303,848
Posted By pblackburn
I did a bolt together design based off of Gerald...

I did a bolt together design based off of Gerald 's design. All crossbearers bolted to main beams, main beams bolted to side legs and cross supports bolted to the side supports. All with sway...
Forum: General - MM Build Wed 05 August 2015, 16:58
Replies: 154
Views: 303,848
Posted By pblackburn
I don't know about rocking, that normally applies...

I don't know about rocking, that normally applies to when something is solid and is moving up off the surface at different contact points. I would say you would have a sway problem. You need sway...
Forum: General - MM Build Thu 30 July 2015, 09:21
Replies: 154
Views: 303,848
Posted By pblackburn
If you want less weight. ...use titanium. ;) ...

If you want less weight. ...use titanium. ;)

Joking aside, you do need the weight to help compensate for the forces generated by cutting fast. Unless you gusset and mount solid to concrete...
Forum: General - MM Build Tue 28 July 2015, 20:58
Replies: 154
Views: 303,848
Posted By pblackburn
Mark, the heavier the gantry the more it resists...

Mark, the heavier the gantry the more it resists the upward forces that naturally occur while cutting. This helps remove the resonance that is transmitted into the lighter materials however there is...
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