JE Labs 300b round 3. Chassis are Done

TubeHound · 20th December 2002, 11:51 PM

Hello Everyone,

Well, this is my best effort at making chassis from scratch. I will need help making sure I solder all the wires correctly and get the polarity right on some of the parts. These are my first DIY audio amps. Hope these inspire some other new person thinking of doing thier own DIY project.

TubeHound · 20th December 2002, 11:52 PM

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TubeHound · 20th December 2002, 11:53 PM

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cadman · 21st December 2002, 12:23 AM

Paul, those chassis look great! You did a nice job with those corners too. Just curious, where did you pick up those octal sockets? AES?

Cory

Peter Daniel · 21st December 2002, 12:55 AM

This is very nice chassis. Did you have any problem with those round holes?

BrianGT · 21st December 2002, 01:57 AM

Absolutely beautiful! What kind of wood did you use for the chassis?

--
Brian

TubeHound · 21st December 2002, 02:11 AM

First, Thank you for the compliments everyone.

Hi Cory,

The sockets are Yamamoto's teflon. One is a UX4 for 300b, one a UX5 for 76 type and two are octal for a GZ37 and 6SN7. The majority of the wood is 3/4 solid walnut harvested and milled by a local. The corners are tulip wood from South America and made using an Incra dovetail jig. I capped all the corners with the tulip wood to fix some mistakes and it came out better than expected.

Hello Mr. Daniel,

First I must say I am in awe of your work and you have certainly inspired me with some of your ideas. The holes were tough, very tough. I laid out the dia. with a compass, then drilled little holes completely around the inside edges. I then used a dremel tool with a cloth reinforced cutoff wheel to connect the little holes and drop the center out. Next, using a electric hand drill I used a small diameter metal cutting bit to cut through sharp ridges left. Once they looked round, I used drum sanders , varying in size from 1 inch to 2 1/4 inch, that mount into the drill to round the holes, checking with a dial caliper to make them fairly uniform. They might vary by 10 to 20 thousands.

Brett · 21st December 2002, 02:30 AM

You should send them to me <i>immediately</i> for safe disposal.

My mdf chassis are blushing.

jainbaby · 21st December 2002, 03:11 AM

Are you going to make any? I want the first one if so.

Steve

jains@panasonic.com

Peter Daniel · 21st December 2002, 04:08 AM

Now, I must say that I am in awe of your work.

10-20 thousands is damn good accuracy.

This type of bits are useful for trimming curves in soft metals, especially if you use it with a 90 deg. grinder.

Did you protect copper somehow?

21st December 2002, 12:55 AM	#5
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	This is very nice chassis. Did you have any problem with those round holes? __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

21st December 2002, 02:30 AM	#8
Brett diyAudio Member Join Date: Jan 2002	Ugly and dangerous You should send them to me <i>immediately</i> for safe disposal. My mdf chassis are blushing.

21st December 2002, 03:11 AM	#9
jainbaby diyAudio Member Join Date: Dec 2002 Location: NJ	Make me some Are you going to make any? I want the first one if so. Steve jains@panasonic.com

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21st December 2002, 12:23 AM	#4
cadman diyAudio Member Join Date: Dec 2002 Location: Iowa	Paul, those chassis look great! You did a nice job with those corners too. Just curious, where did you pick up those octal sockets? AES? Cory

21st December 2002, 01:57 AM	#6
BrianGT diyAudio Moderator Emeritus Join Date: Jan 2002 Location: near Atlanta, GA	Absolutely beautiful! What kind of wood did you use for the chassis? -- Brian

21st December 2002, 02:11 AM	#7
TubeHound diyAudio Member Join Date: Dec 2006	First, Thank you for the compliments everyone. Hi Cory, The sockets are Yamamoto's teflon. One is a UX4 for 300b, one a UX5 for 76 type and two are octal for a GZ37 and 6SN7. The majority of the wood is 3/4 solid walnut harvested and milled by a local. The corners are tulip wood from South America and made using an Incra dovetail jig. I capped all the corners with the tulip wood to fix some mistakes and it came out better than expected. Hello Mr. Daniel, First I must say I am in awe of your work and you have certainly inspired me with some of your ideas. The holes were tough, very tough. I laid out the dia. with a compass, then drilled little holes completely around the inside edges. I then used a dremel tool with a cloth reinforced cutoff wheel to connect the little holes and drop the center out. Next, using a electric hand drill I used a small diameter metal cutting bit to cut through sharp ridges left. Once they looked round, I used drum sanders , varying in size from 1 inch to 2 1/4 inch, that mount into the drill to round the holes, checking with a dial caliper to make them fairly uniform. They might vary by 10 to 20 thousands.

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