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9 replies to this topic
Posted 03 March 2007 - 07:57 AM
What is the best way to cut Circut Board? Would the EMT Scissor cut it?
Posted 03 March 2007 - 10:57 AM
Did you buy it, get the punch made or make it?
This subject has not really been explored on TU. If you made your own punch, would you mind imparting some of your knowledge, or does anyone else out there have any experience of making simple punches.
Would a shaped steel pipe with a sharp edge do it?
Thank's in advance.
Posted 03 March 2007 - 12:19 PM
The easiest way I've found is to rough cut it with a pair of tin snips and then sand down to the exact line with a Dremel fine sanding drum. Pretty fast and very exact.
Posted 03 March 2007 - 10:36 PM
You can rough cut it in a band saw(probably a scroll saw too, but I don't have one) and sand to the lines. Just wear a respirator when doing any cutting or sanding on this stuff. It is a form of fiberglass and you don't want the dust in your lungs.
Posted 04 March 2007 - 09:51 AM
I designed the dies on autocad and had a local machine shop make them. My cost was 1500.00 they knock out four at a time. It also has a backstop and a cut off to remove the scrap. The dies have a knife edge that allows it to cut through the material half way and then punch it the rest of the way out. This set up will punch out around 3800 pieces an hour. Now thats alot of lips!
Posted 04 March 2007 - 10:50 AM
And you better like that lip shape before you buy the die! I read here on TU where someone got a community college machine shop class to build a die and mechanical press for almost nothing. Good example of your tax dollars at work I don't think a hand hewn steel pipe would do the trick.
Posted 04 March 2007 - 10:59 AM
Probably not, Just thought I would ask before before wasting my time.
There is no low volume short cut here.
I am considering a mini NC milling machine, not just for lips and bodies. I have other applications for the machine outside of fishing lures, so could possibly justify the expence.
A ways to go before I reach that stage. Thank's.
Posted 04 March 2007 - 11:43 AM
Yes, I'm seeing more and more crankbait bodies that have been molded on a rotary milling machine. You can always tell by the circular tool marks it leaves around the lure.
Posted 04 March 2007 - 11:56 AM
It's getting away from the subject, so, sorry about the deviation.
I get carried away with my CAD and end up with wierd and wonderful shapes, so it would be used for roughing out masters to be used for prototype Plaster of Paris molds.
When everything works, I would get the molds professionally machined in aluminium.
These are just thoughts at this stage, but not too far off.