Fun on the lathe......Waveguides

THUMP LUMP · 5th December 2009, 02:24 AM

Got to playing a bit on my lathe and made the first of, I'm sure, many waveguides. 4.50" OD. .750" MDF. I made the flat plate jig myself from 6061 aluminum.

Spasticteapot · 5th December 2009, 03:29 AM

Nice!

Do you take commissions?

Pano · 5th December 2009, 03:52 AM

Nice work, we hope to see more!

THUMP LUMP · 5th December 2009, 04:14 AM

Thanks for the compliments. No commissions (yet) That was the first one I have ever made. I will probably start a build thread soon as I almost have all the MDF cut. 2 way bi-amped with automotive based A/D/S 320is woofer and Alpine 6022 tweet. Flame maple front w/ black finish elsewhere. After that will be a 4 channel LM3886 Gainclone project.

J.R.Freeman · 5th December 2009, 05:15 PM

Very neat! How big an OD to you think you could make?

THUMP LUMP · 5th December 2009, 05:49 PM

This is the max. 4.50". That is all my small lathe can handle at the moment. Though, the MFG. (Taig) does make a kit that raises the head stock 1" which would give a total of 2" more DIA. (6.5")

THUMP LUMP · 5th December 2009, 05:55 PM

I will probably make the second one this evening and will take some more pics of the process. Right now, it already has the OD turned and the center bored. I'll describe the details of that when I post the pics.

sdclc126 · 5th December 2009, 06:16 PM

How did you make the jig? Lathe also?

tinitus · 5th December 2009, 06:26 PM

Wood lathe is quite old

When doing large items it was usual to use the outside of the lathe, and have a stand on the floor, to support hands and cutting tool

But this can be pretty dangerous stuff if doing it wrong
Even if not doing it by hand but using metal lathe and fixed tools, it can go pretty bad if not secured properly

THUMP LUMP · 5th December 2009, 07:15 PM

Yes, I made the jig on the lathe also. With the help of a band saw to get the rough circle on the plate.

The lathe is a small metal turning lathe. I hold the piece on with 3 #4 screws that are 3/4" long. It turns true (to within a few thousands of an inch) and is balanced well with no discernible vibration. I had zero issues turning the first one. With one bigger cuts than I am making, and that MDF cuts easily, those 3 screws should be plenty.

5th December 2009, 02:24 AM	#1
THUMP LUMP diyAudio Member Join Date: Aug 2007 Location: Arden,NC	Fun on the lathe......Waveguides Got to playing a bit on my lathe and made the first of, I'm sure, many waveguides. 4.50" OD. .750" MDF. I made the flat plate jig myself from 6061 aluminum.

5th December 2009, 03:52 AM	#3
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Nice work, we hope to see more! __________________ Take the Speaker Voltage Test!

5th December 2009, 06:16 PM	#8
sdclc126 diyAudio Member Join Date: Jan 2005 Location: San Diego, CA	How did you make the jig? Lathe also? __________________ Soft Dome

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5th December 2009, 03:29 AM	#2
Spasticteapot diyAudio Member Join Date: Jan 2006 Location: Wisconsin....what did you expect?	Nice! Do you take commissions?

5th December 2009, 04:14 AM	#4
THUMP LUMP diyAudio Member Join Date: Aug 2007 Location: Arden,NC	Thanks for the compliments. No commissions (yet) That was the first one I have ever made. I will probably start a build thread soon as I almost have all the MDF cut. 2 way bi-amped with automotive based A/D/S 320is woofer and Alpine 6022 tweet. Flame maple front w/ black finish elsewhere. After that will be a 4 channel LM3886 Gainclone project.

5th December 2009, 05:15 PM	#5
J.R.Freeman diyAudio Member Join Date: Aug 2008	Very neat! How big an OD to you think you could make?

5th December 2009, 05:49 PM	#6
THUMP LUMP diyAudio Member Join Date: Aug 2007 Location: Arden,NC	This is the max. 4.50". That is all my small lathe can handle at the moment. Though, the MFG. (Taig) does make a kit that raises the head stock 1" which would give a total of 2" more DIA. (6.5")

5th December 2009, 05:55 PM	#7
THUMP LUMP diyAudio Member Join Date: Aug 2007 Location: Arden,NC	I will probably make the second one this evening and will take some more pics of the process. Right now, it already has the OD turned and the center bored. I'll describe the details of that when I post the pics.

5th December 2009, 06:26 PM	#9
tinitus diyAudio Moderator Join Date: Nov 2005	Wood lathe is quite old When doing large items it was usual to use the outside of the lathe, and have a stand on the floor, to support hands and cutting tool But this can be pretty dangerous stuff if doing it wrong Even if not doing it by hand but using metal lathe and fixed tools, it can go pretty bad if not secured properly

5th December 2009, 07:15 PM	#10
THUMP LUMP diyAudio Member Join Date: Aug 2007 Location: Arden,NC	Yes, I made the jig on the lathe also. With the help of a band saw to get the rough circle on the plate. The lathe is a small metal turning lathe. I hold the piece on with 3 #4 screws that are 3/4" long. It turns true (to within a few thousands of an inch) and is balanced well with no discernible vibration. I had zero issues turning the first one. With one bigger cuts than I am making, and that MDF cuts easily, those 3 screws should be plenty.

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