I bought a 5lb spool of Kester 44 in 1969 and always joked about it being a lifetime supply. Looks like I was right.
I did not choose the Metcal Tweezers but both a fine and an ultra-fine pen
on the MX5200 at the same time. That is more flexible. One for 0402..1206
and the other for thru-hole and "normal"-sized cables. And to remove a chip resistor,
one can heat both ends at once.
WRT unsolder braid, there are huge quality differences. Some don't work at all,
other makes are just wonderful. MG Chemicals SuperWick is quite OK. I had even
better, but don't remember where from.
I also have really good 0.25mm solder wire, but it contains Pb and I can't get more.
It has a good flux, too.
Digikey has solder wire down to 0.2mm, but Pb-less and €65 for a tiny roll.
I had it on my order list but postponed it.
MDSWLF.006 50G
< Blocked >
on the MX5200 at the same time. That is more flexible. One for 0402..1206
and the other for thru-hole and "normal"-sized cables. And to remove a chip resistor,
one can heat both ends at once.
WRT unsolder braid, there are huge quality differences. Some don't work at all,
other makes are just wonderful. MG Chemicals SuperWick is quite OK. I had even
better, but don't remember where from.
I also have really good 0.25mm solder wire, but it contains Pb and I can't get more.
It has a good flux, too.
Digikey has solder wire down to 0.2mm, but Pb-less and €65 for a tiny roll.
I had it on my order list but postponed it.
MDSWLF.006 50G
< Blocked >
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I find the ultra fine pen and cartridges useless if one pad is grounded by in-pad vias (on 4 layers boards). 63-37 with 7- cartridges or lead free with 8- cartridges can't make the solder to flow. It calls for the fine (larger) pen with a chisel cartridge (or the old Weller) to solder on these pads. Or preheating the board, which is annoying if you have to rework one resistor or cap.
The Metcal tweezer is amazing, it saves money and pays for itself if you count how many expensive parts can be reworked without incidents.
The Metcal tweezer is amazing, it saves money and pays for itself if you count how many expensive parts can be reworked without incidents.
I solder nearly everything with the UltraFine, even SMA end launchers
that are massive metal structures in comparison, with many GND vias added.
The Not-Ultra-Fine pencil is not even on the work table but on the table
behind me where the drill press is.
BTW does the DigiKey link work for you? I see the text <blocked> but it works.
cheers, Gerhard.
that are massive metal structures in comparison, with many GND vias added.
The Not-Ultra-Fine pencil is not even on the work table but on the table
behind me where the drill press is.
BTW does the DigiKey link work for you? I see the text <blocked> but it works.
cheers, Gerhard.
Yes the link works to the German site.
That allows me to get to:
Blocked
Which also works for me! When I drop the "ttps://" I get...
www.digikey.com/en/products/detail/...CBcDaIMoFkAicDqAZAYgOgAy4DYBWXAcQFoA5JEAXQF8g
That allows me to get to:
Blocked
Which also works for me! When I drop the "ttps://" I get...
www.digikey.com/en/products/detail/...CBcDaIMoFkAicDqAZAYgOgAy4DYBWXAcQFoA5JEAXQF8g
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I also use the bigger tips, especially with the P in part number.
The tweezers I have never really liked that much, but we do have limited tips for those. I normally use both sides of the simultaneous output Metcal or two separate irons instead of the tweezers.
It does seem to me like solder wick, even the name-brand stuff, doesn't seem to work as well as it used to? Dunno if there's been a change in the impregnated flux, or maybe it's just my imagination. I used to buy big rolls of Chem-Wik in the 0.1" size that got me in & out of most jobs without fuss. But these days I have to be sure to soak it with more flux or it just doesn't seem to happen. This is one of the main reasons I finally loosened up and spent some money on a Hakko vacuum gun (sure glad I did).
Solder wick doesn't seem to work as well with lead free solder. Nothing really beats a good desoldering tool. I am always tempted to modify a commercial unit as I have both shop compressed air and vacuum.
I do have a "project" Neve mixing console that one modification is to change two capacitors. However as it is all tightly packed surface mount components, my hot air tool is not an option for the work. (A Neve not a Rupert!)
I do have a "project" Neve mixing console that one modification is to change two capacitors. However as it is all tightly packed surface mount components, my hot air tool is not an option for the work. (A Neve not a Rupert!)
I recall that article has a collection of capacitors and resistors in a feedback loop that when carefully adjusted cancels a sample-and-hold capacitor's DA to a remarkable degree.
I've wondered how (and if) DA can affect audio, as the resistances in series with these "phantom" capacitors are in the megohm and up range. This could only affect the gain or frequency response to a very small fraction of a dB in most any audio circuit. Everything is linear so nothing can cause harmonic distortion.
But it's a fascinating phenomenon.
I better not touch that ...
Whether you can impute financial interest or not, seems more likely that you met resistance trying to claim what may have been perceived as proof people can't hear something they plainly do hear, and which they attribute (correctly or not) to DA.
