Cutting 186 Horn Mitres |
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Panda
Registered User Joined: 01 November 2010 Location: Cape Town Status: Offline Points: 46 |
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Posted: 09 April 2014 at 9:54am |
What is the best way to do the mitres on a folded horn box? I would like to build some 186 Horns, but need to know if there are any "tricks" to getting the mitres perfect. I'm not sure if the calculated angles transferred to a Festool track saw will be accurate enough.? I gather there are also some angle cuts in excess of the capabilities of such a saw?
My initial plan was to have the sides of the boxes CNC cut to give me the folded horn rebates - thats easy, but I would like to do the best job I can of the mitering. Do the flat pack guys also cut the mitre angles on cnc to avoid this issue?
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crossed
Registered User Joined: 26 September 2011 Location: Ky US Status: Offline Points: 217 |
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I've always just adjusted my angle on the saw to whatever angle I need, I'll test the angle cut with a piece of scrap wood and use a protractor or something similar to check the angle and then once the angle is tweaked and spot on I set my fence a little longer than I need and shave it off a little at a time until perfect measurements.
I can't trust any of the measurements labeled on my wood working equipment, so I use it as a course setting and then finish the fine settings by hand. Edited by crossed - 09 April 2014 at 10:28am |
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shagnasty
Old Croc Joined: 30 July 2007 Location: Guildford, UK Status: Offline Points: 7685 |
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Yes a Decent CNC setup will cut perfect mitres, and if you can afford it is the way to go, if you want to do them yourself a rail saw like a Festool TS-55 is the min I would attack with a decent table saw is better and one with a mitre fence (anything over 45 degree requires angling the board onto the blade) is a dream.. One thing I did see on here is a guy axed all his mitres with a router in a jig, I guess you do a rough cut with a saw and them finish with the router, some thing like this :- he just clamped piece to the sides to guide the panels, very clever.. |
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Fabianm_be
Registered User Joined: 30 November 2013 Status: Offline Points: 64 |
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i'm using a Festool rail saw for all my speakers work (mitre or not) and got a good result with a bit of care
Edited by Fabianm_be - 10 April 2014 at 10:38am |
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colinmono
Young Croc Joined: 10 October 2007 Location: Midlands UK Status: Offline Points: 1111 |
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I remember seeing that thread but can't for the life of me find it now. Looks like it could be a good way to do it for those of us who can't afford a decent rail / table saw. Thanks for the diagram, makes it easier to see how it would work. Does anyone remember the original build thread this idea came from? |
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catalin
Registered User Joined: 02 April 2012 Location: London Status: Offline Points: 152 |
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Hi there
Try this http://forum.speakerplans.com/pd-1851_topic65709_page3.html I used the jig whith very good resuts
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colinmono
Young Croc Joined: 10 October 2007 Location: Midlands UK Status: Offline Points: 1111 |
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Ah that was it, thanks! Peeping through the slot at the top of the jig I think I can see how you hold the work piece at the right angle. Clever stuff. |
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