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<blockquote data-quote="joeldirt" data-source="post: 773455" data-attributes="member: 558163">you know what works good if you do not have access to a table saw? if I don&#039;t have a straight edge handy,&nbsp; I just knock off about two inches off my sheet of MDF with my circular saw and have and instant straight edge. a brand new sheet of MDF comes perfect square, so you know the end is good for a straight edge. (just dont use the side you just got dont cutting). Also befor you make the cut measure out 3 inches on each side, that way you can take the new straight edge you just made to connect the dots and draw that straight line.&nbsp; Then measure out the distance from the inside of yor blade to the edge the saw rides along the fence on. Take that measurement, and from the line you just made to cut, measure back the distance you need to clamp your MDF straight edge and make a second line.&nbsp; clamp your MDF straight edge on that line and use it as your fence. Run the saw along that fence and you have the exact sheet of MDF just as square only 3 inches shorter. But now you have a straight edge, and a fence, and a technique when you dont have a long straight edge square, or a fence. This works good for a circular saw. Don&#039;t use a jig saw for cuts unless you have to. they are best for curves. They do okay for straight cuts, but not as good as a circular saw, or nealy as good as a table saw.*Also, if you dont have any clamps, you can use an inch long screw to temp hold your fence down. That works well too.*</blockquote>

[QUOTE="joeldirt, post: 773455, member: 558163"] you know what works good if you do not have access to a table saw? if I don't have a straight edge handy, I just knock off about two inches off my sheet of MDF with my circular saw and have and instant straight edge. a brand new sheet of MDF comes perfect square, so you know the end is good for a straight edge. (just dont use the side you just got dont cutting). Also befor you make the cut measure out 3 inches on each side, that way you can take the new straight edge you just made to connect the dots and draw that straight line. Then measure out the distance from the inside of yor blade to the edge the saw rides along the fence on. Take that measurement, and from the line you just made to cut, measure back the distance you need to clamp your MDF straight edge and make a second line. clamp your MDF straight edge on that line and use it as your fence. Run the saw along that fence and you have the exact sheet of MDF just as square only 3 inches shorter. But now you have a straight edge, and a fence, and a technique when you dont have a long straight edge square, or a fence. This works good for a circular saw. Don't use a jig saw for cuts unless you have to. they are best for curves. They do okay for straight cuts, but not as good as a circular saw, or nealy as good as a table saw. *Also, if you dont have any clamps, you can use an inch long screw to temp hold your fence down. That works well too.* [/QUOTE]

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