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Old 10th June 2013, 02:33 AM   #5211
male42 is offline male42  Russian Federation
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Default 300B mono

mono 300b lamp SE. the body is made of rosewood
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Old 10th June 2013, 02:35 AM   #5212
12B4A is offline 12B4A  United States
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Quote:
Originally Posted by sakellogg View Post
i cant ever get them to stay longer than a year! even clean the surface, grind off paint clean with solvent etc.... dont last.

i like the duct tape, not that it is the best looking underside... but come on, you cant argue the top side is B-E-A-Utiful!
It's probably the heat of the amp that degrades the adhesive and/or the temperature cycling of the amp going on and off. Some JB Weld epoxy will keep them from going anywhere. Just be aware that the epoxy will never come off once cured. Never. (picture included)

The last amp I built had a thick enough top plate that I could drill blind holes for mounting. It turned out really nice but that was the most nervous I've been tapping a thread. I think I can live with screw heads sticking out of the top plate on the next project.
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Old 10th June 2013, 03:00 AM   #5213
AJT is offline AJT  Philippines
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Quote:
Originally Posted by sakellogg View Post
i cant ever get them to stay longer than a year! even clean the surface, grind off paint clean with solvent etc.... dont last.

i like the duct tape, not that it is the best looking underside... but come on, you cant argue the top side is B-E-A-Utiful!
what i do in my case is i remove the original sticky backing completely, instead i use rubber cement, the type that is used on shoes....

coat both surfaces to be joined lightly and allow a few minutes to dry somewhat, then using a rubber mallet to bond the mounting base to the chassis...
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Old 10th June 2013, 03:05 AM   #5214
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You guys could be right could be quality and I had never thought of epoxy. Would work nice.
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Old 10th June 2013, 06:22 AM   #5215
Stixx is offline Stixx  Germany
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Quote:
mono 300b lamp SE. the body is made of rosewood
Sweet!!
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Old 10th June 2013, 06:46 AM   #5216
M Gregg is offline M Gregg  United Kingdom
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Quote:
Originally Posted by sakellogg View Post
You guys could be right could be quality and I had never thought of epoxy. Would work nice.
I must admit,

I use evostick to glue them..or epoxy..and as said you can't get them off even if you want to..

I'm not a fan of epoxy on plastic I prefer rubber type glue.

And there is a quality issue..I have used some in the past and they are still stuck fast after 10years..

Regards
M. Gregg
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Old 10th June 2013, 06:49 AM   #5217
M Gregg is offline M Gregg  United Kingdom
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Quote:
Originally Posted by male42 View Post
mono 300b lamp SE. the body is made of rosewood
Very nice!
How do you cut the covers for the transformers and fix mountings?

Regards
M. Gregg
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Old 10th June 2013, 08:00 AM   #5218
SVStube is offline SVStube  Ukraine
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24A-2A3 SE monoblock with a preamplifier.
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Old 10th June 2013, 08:20 AM   #5219
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Male42: very nice build. Clean and smart looking. What is the driver tube and do you have a schematic?
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Old 10th June 2013, 08:27 AM   #5220
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24A-2A3 SE monoblock with a preamplifier.
They are pro looking amps. Excellent work.
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