Vector01 Posted November 4, 2010 Report Share Posted November 4, 2010 Hi All: Working on a scale model of a wooden scroll saw (1800's). I would like to be able to move the arms up and down (slightly) by use of a simple crank. Doesn't have to cut wood just move a little. I don't have the finished dimensions yet. Still designing the parts. It will be approximately 6" long by 4" high. Unfortunately the original picture is on another site and due to copyrite I don't want to post it here. I can't seem to find another photo of this saw anywhere. I'm not a engineer so I'm not quite sure if my design will work. I played around and made what I think might work using Google Sketchup. Again, in theory it might move Can anybody give me some pointers with this? What do I need to modify? Here's a few basic picks... [attachment=4]scroll table 1.png[/attachment][attachment=0]scroll saw table5.png[/attachment] [attachment=3]scroll saw table 2.png[/attachment] [attachment=2]scroll saw table 3.png[/attachment] [attachment=1]scroll saw table 4.png[/attachment] Thanks! Quote Link to comment Share on other sites More sharing options...
Oges Posted November 4, 2010 Report Share Posted November 4, 2010 Looks interesting and I can see how you intend it to work and get the up/down motion for the blade, but im far from being an engineer and wouldnt be able to give you anything useful to use. Could you take a look at how the wooden foot powered scroll saw works (you can get plans for that) and see if you can adapt your hand crank one to work in a similar fashion? Quote Link to comment Share on other sites More sharing options...
grampa Posted November 4, 2010 Report Share Posted November 4, 2010 Hi Art, where you have the handle conected if you make an make an oval bush to fit under the arm when it rotates it should raise and lower the bottom arm you may have to make it a bit wider to get under the arm, It may work........Paul Quote Link to comment Share on other sites More sharing options...
Vector01 Posted November 5, 2010 Author Report Share Posted November 5, 2010 Ahaaa...Yes a cam Attached to the main shaft. This will allow for additional support on both sides of the cam. Great work Mr. Holmes Unfortunately the original photo does not show the mechanics or give any dimensions. Thought a bit of a brain teaser was in order "With this clue Dr. Watson, we shall soon have full knowledge of Dr. Moriarty's fiendish device." Can you tell I'm a fan of Sir Arthur Conan Doyle Quote Link to comment Share on other sites More sharing options...
Travis Posted November 5, 2010 Report Share Posted November 5, 2010 Here are a couple of saws on ebay that are hand-cranked. Not sure if the pix are of any use, but it might spark an idea or two. http://cgi.ebay.com/ANTIQUE-AMERICAN-SC ... 335ef155cd http://cgi.ebay.com/Antique-Delta-Scrol ... 3f04893c89 Quote Link to comment Share on other sites More sharing options...
Vector01 Posted November 6, 2010 Author Report Share Posted November 6, 2010 Checked out those links...Wow talk about crude. That Delta looked it was put together by a mad plumber After searching for a while I did find a pic of something close...Basic design and mechanics of the one I have... [attachment=0]old saw.jpg[/attachment] Quote Link to comment Share on other sites More sharing options...
amazingkevin Posted November 6, 2010 Report Share Posted November 6, 2010 Hows the vibration on this unit ,i don't think i can wear this one out. Quote Link to comment Share on other sites More sharing options...
Huntter2022 Posted November 7, 2010 Report Share Posted November 7, 2010 Kevin you may not wear it out but it would proably wear you out Quote Link to comment Share on other sites More sharing options...
Vector01 Posted November 7, 2010 Author Report Share Posted November 7, 2010 Dunno? I'll have to give it the standing nickel test when it's done Quote Link to comment Share on other sites More sharing options...
Oges Posted November 7, 2010 Report Share Posted November 7, 2010 Kevin you may not wear it out but it would proably wear you out Maybe he could hook up a hampster wheel to it Quote Link to comment Share on other sites More sharing options...
Vector01 Posted November 8, 2010 Author Report Share Posted November 8, 2010 Hey...Truth is stranger than fiction. I already have a basic rubber band drive designed for it I really don't want to get too nuts with this Quote Link to comment Share on other sites More sharing options...
amazingkevin Posted November 8, 2010 Report Share Posted November 8, 2010 I hope the rubber band is the size of a deisel truck tire inner tube so it'll last for a while to finish a project! Quote Link to comment Share on other sites More sharing options...
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