Re: Durable small hex (etc) bits?
ATF mixed with acetone is bad news for plastic and paint! Acetone will nuke most paints and a lot of plastics.
Don't use it to loosen stubborn grub screw in plastic knobs or close to painted surfaces!
Wilko
|
Re: New doc about 180 oscilloscopes
Hi Friends,
very grateful for you appreciation and contributes. I update the doc and tell you when done.
It¡¯s wonderful to know that I am not the only one romantic mad¡ ????
|
Yeah, It was. I have examples of 60's style and later OSM and Maury that were made much differently, better center contacts, gold plated, tighter tolerance, etc. More of "metrology" grade style improvements. I have some RWR cables made by Adams Russell that have REALLY nice stainless &gold plated construction.
Jeff Kruth
In a message dated 6/30/2024 10:58:29 PM Eastern Standard Time, roy.thistle@... writes:
?
On Sat, Jun 29, 2024 at 03:48 PM, Jeff Kruth wrote:
threaded BNC type, used initially to 12 GHz then improved to 18 GHz
Not sure that the TNC was necessarily 'improved' to get higher bandwidth... it was just used with semi-rigid... copper jacketed... coax. Just keeping all that high frequency... RF goodness... from leaking out the back end of the connector... or reflecting... that gave the connector a higher bandwidth.
|
On Sat, Jun 29, 2024 at 03:48 PM, Jeff Kruth wrote:
threaded BNC type, used initially to 12 GHz then improved to 18 GHz
Not sure that the TNC was necessarily 'improved' to get higher bandwidth... it was just used with semi-rigid... copper jacketed... coax. Just keeping all that high frequency... RF goodness... from leaking out the back end of the connector... or reflecting... that gave the connector a higher bandwidth.
|
Re: Durable small hex (etc) bits?
Somebody mentioned Vessel for JIS tools.? I discovered those guys about 20 years and several employers ago when we needed non-metallic screwdrivers for adjusting inductor cores in ultrasonic oscillators.? Regular metal screwdrivers annoyingly affected the inductance and caused the oscillators to shift in frequency when the screwdriver was pulled away.? The ceramic screwdrivers from Vessel had negligible effect on the frequency.? Piece of cake to tune the oscillators with the ceramic screwdrivers.
Jim Ford Laguna Hills, California, USA
On Sunday, June 30, 2024 at 06:21:50 PM CDT, Bill Martin <wwm@...> wrote:
The liquid can is more cost effective, the spray can is more convenient.
At least that has been my experience, and the stuff really works.
-bill
On 6/30/24 15:44, Paul Amaranth wrote:
> There's only one Kroil, whether you get it in an 8 oz drip can, an
> aerosol or a 55 gal drum.
>
> They make some other products as well, including lubricants, but the
> penetrating oil is what you need to unstick stuff.
>
> I usually get the spray can but the drip can would probably be easier
> to work with on a lab bench.
>
> Kano labs (which used to be the only place you could buy it) sold out
> the other year, I think to a VC firm.? The new owners seem to be upping
> the distribution a bit but so far have not changed the formula.? It's
> more convenient; I can now pick it up at my local industrial supplier.
>
> In a pinch you can use ATF mixed with acetone.
>
>
>? ? Paul
>
> On Sun, Jun 30, 2024 at 07:32:46PM -0300, Bernardo Santos wrote:
>> After reading this I just ordered a Wiha 35392 set too.
>>
>> As for the Kroil penetrating oil, I see there are several different ones. Which one is the best for loosening stubborns knob screws?
>>
>> Great suggestions!
>>
>> Att.,
>> Bernardo Santos
>>
>>> Em 30 de jun. de 2024, ¨¤(s) 12:56, Ren¨¦e via groups.io <k6fsb.1@...> escreveu:
>>>
>>> Wiha 35392
|
Hi Jinxie:
When I was working on the HP 4380S 8-port VNA I ran into this problem with with all flexible cables no matter what connector they had.
The solution was to build the cables using only solid copper jacket 0.141 cables.? HP has a special hunk of metal to be used for bending this coax.
--
Have Fun,
Brooke Clarke
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.
|
Re: Durable small hex (etc) bits?
The liquid can is more cost effective, the spray can is more convenient. At least that has been my experience, and the stuff really works.
-bill
toggle quoted message
Show quoted text
On 6/30/24 15:44, Paul Amaranth wrote: There's only one Kroil, whether you get it in an 8 oz drip can, an
aerosol or a 55 gal drum.
They make some other products as well, including lubricants, but the
penetrating oil is what you need to unstick stuff.
I usually get the spray can but the drip can would probably be easier
to work with on a lab bench.
Kano labs (which used to be the only place you could buy it) sold out
the other year, I think to a VC firm. The new owners seem to be upping
the distribution a bit but so far have not changed the formula. It's
more convenient; I can now pick it up at my local industrial supplier.
In a pinch you can use ATF mixed with acetone.
Paul
On Sun, Jun 30, 2024 at 07:32:46PM -0300, Bernardo Santos wrote:
After reading this I just ordered a Wiha 35392 set too.
As for the Kroil penetrating oil, I see there are several different ones. Which one is the best for loosening stubborns knob screws?
Great suggestions!
Att.,
Bernardo Santos
Em 30 de jun. de 2024, ¨¤(s) 12:56, Ren¨¦e via groups.io <k6fsb.1@...> escreveu:
Wiha 35392
|
Agreed. I have a couple of BNC cal kits for my VNA and it is really difficult to maintain good phase stability during the cal process when using BNC connectors. This can even affect measurements down at VHF. I also have some favourite BNC cables that are reasonably stable, but the performance is still fairly grim compared to using N or 3.5mm connectors.
|
Re: Durable small hex (etc) bits?
There's only one Kroil, whether you get it in an 8 oz drip can, an
aerosol or a 55 gal drum.
They make some other products as well, including lubricants, but the
penetrating oil is what you need to unstick stuff.
I usually get the spray can but the drip can would probably be easier
to work with on a lab bench.
Kano labs (which used to be the only place you could buy it) sold out
the other year, I think to a VC firm. The new owners seem to be upping
the distribution a bit but so far have not changed the formula. It's
more convenient; I can now pick it up at my local industrial supplier.
In a pinch you can use ATF mixed with acetone.
Paul
toggle quoted message
Show quoted text
On Sun, Jun 30, 2024 at 07:32:46PM -0300, Bernardo Santos wrote: After reading this I just ordered a Wiha 35392 set too.
As for the Kroil penetrating oil, I see there are several different ones. Which one is the best for loosening stubborns knob screws?
Great suggestions!
Att.,
Bernardo Santos
Em 30 de jun. de 2024, ¨¤(s) 12:56, Ren¨¦e via groups.io <k6fsb.1@...> escreveu:
Wiha 35392
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows
|
Re: Durable small hex (etc) bits?
After reading this I just ordered a Wiha 35392 set too.
As for the Kroil penetrating oil, I see there are several different ones. Which one is the best for loosening stubborns knob screws?
Great suggestions!
Att.,
Bernardo Santos
toggle quoted message
Show quoted text
Em 30 de jun. de 2024, ¨¤(s) 12:56, Ren¨¦e via groups.io <k6fsb.1@...> escreveu:
Wiha 35392
|
The main problem with BNC is when it comes to anything phase sensitive. A VNA shows this up really well when you wiggle the BNC plug or the cable going into it, the phase response goes haywire and prevents any meaningful repeatability of measurement.
|
I had some free time today so I dug out my old HP 83752A 20GHz synthesised sweeper and fed it to an Agilent E4440A spectrum analyser via a very expensive Gore cable. The cable is about 30cm long using 3.5mm connectors. I've got another Gore cable that uses 2.92mm connectors and also tried that.
Then I tried putting a decent Suhner N to BNC adaptor at the analyser input and an expensive Suhner SMA to BNC adaptor at the end of the Gore cable. I then ran the sweep again up to 20.5GHz. There was very little difference in the amplitude response all the way to 20GHz.
I'm not sure what this actually proves or disproves, as I think this is close to an ideal setup for the BNC connectors. The 83752A sweeper will have a well controlled source impedance and I think my E4440A analyser has a VSWR spec of <1.9:1 at 20GHz. If I had used a cruder 20GHz signal generator feeding to an SD frequency counter input I think the source and load VSWR would be a lot worse and there could have been sharp dips in the frequency response in some places.
Sadly, my sweeper tops out at 20.5GHz so I can't test up to the 26.5GHz limit of the PSA analyser. I could try using a doubler but I don't have anything here that can reliably produce harmonic distortion up to 26.5GHz.
|
Re: Durable small hex (etc) bits?
For screwdrivers and the like, Wiha and Wera are excellent brands, but the one I've got that I feel eclipses even those two is PB Swiss. ?They were what was in my tool kit back in the early 90s when I worked for a company that was based in Liechtenstein, and I looked for them for quite a while after leaving that place, but to no avail. ?Tried again a few years ago and managed to find them online and have since ordered flat, Phillips and Posidriv screwdriver sets from them, and will eventually get Torx and hex as well. I'm old cschool and prefer the 'classic' handles, but they have various styles of more ergonomic ones too. -Pat
?
> ------ Original Message ------
> From: vondicher@...
> To: [email protected]
> Sent: Sunday, June 30th 2024, 02:51 PM
> Subject: Re: [HP-Agilent-Keysight-equipment] Durable small hex (etc) bits?
? For Posidrive I have a set of this "lesser name" brand Dave recommended (which is excellent; I find myself using it for just about everything "cross" driving). Can't think of the name.? Not to advertise too strongly, but my favorite brand of tools is Milwaukee. Expensive, but their power tools are indestructible and supremely competent (IMHO). They also make screwdrivers and such, but Wiha is this specialized hand tools maker that seems to be the top of the game at this.? Radu.?
?
I own several sets of tools made by Wiha. Most of them have survived decades of steady use without noticeable wear and they perform very well. I even purchased a set of Posidrive screwdrivers specifically for use on HP equipment. It has gotten to the point where if I need a hand tool for my lab, I look at Wiha first. For the shop, SK Wayne.
DaveD
? On 6/30/2024 12:34 PM, Radu Bogdan Dicher via wrote:
? Renee, That's a great recommendation - I have a screwdriver or two by Wiha and they're top notch. Thank you.? I just ordered a set of those hexes and the price is actually surprisingly?low. Radu.?
?
On Sun, Jun 30, 2024 at 9:32?AM Radu Dicher < vondicher@...> wrote: ? Steve, I've heard good things about Kroil, and it's probably time I bit the bullet, but I'm a little apprehensive about applying it to a plastic part that's as conspicuous as a knob is. Is this totally harmless to plastic? I'd hate to get discoloration or other damage when trying to reuse those knobs.? Thanks! Radu.?
?
On Sun, Jun 30, 2024 at 9:05?AM Steve Hendrix via <SteveHx= [email protected]> wrote: ? On 2024-06-30 11:51 AM, Radu Bogdan Dicher wrote:
> Hi all,
> I'm often running into the situation where, trying to remove to?
> replace knobs on HP (and any number of brands) units, I need to use?
> very small hex or other types of bits which get ruined very easily,?
> sometimes on first use. These bits are from sources such as Amazon,?
> where very good assortments and sets are easily available. The steel?
> they use may not be of top notch quality.?
Before you ruin any more bits or setscrews, get some Kroil. Best?
penetrating oil I've ever used, and I learned about it here or on the?
similar Tek group. I've used it to free things that I had given up as?
hopeless. Apply a bit as close to the threads as you can get, wait an?
hour or so and hit it again, and try moving it a few minutes later.
Steve Hendrix
?
?
? ?
|
Re: Durable small hex (etc) bits?
I¡¯ve had excellent results with both the hex and spline wrench sets from . Their products are made in the USA and have been for 111 years. One of my spline screwdriver sets dates back to 1978 and still has no wear showing after considerable use.
Prices are very reasonable as well.
Greg
|
Re: Durable small hex (etc) bits?
Whoa! JIS (yes it is Japanese Industrial Standard) is not the same thing as Philips! The angles are completely different and they are not interchangeable. Much like Pozidriv and Philips being incompatible.
Pozidriv screw heads have little tick marks between the points. JIS screw heads have a single dot or divot between two of the points. Philips have no markings.
-Dave
toggle quoted message
Show quoted text
On 6/30/24 16:10, Jon wrote: If you are looking for small precision JIS style cross point screw drivers, aka phillips head, Vessel makes very good sets. I use them on camera lenses since JIS is just enough different from phillips, a normal phillips driver will strip them out. JIS = Japanese Industrial Standard if I recall correctly.
On Sun, Jun 30, 2024, 13:51 Radu Bogdan Dicher via groups.io <> <vondicher@... <mailto:[email protected]>> wrote:
For Posidrive I have a set of this "lesser name" brand Dave
recommended (which is excellent; I find myself using it for just
about everything "cross" driving). Can't think of the name.
Not to advertise too strongly, but my favorite brand of tools is
Milwaukee. Expensive, but their power tools are indestructible and
supremely competent (IMHO). They also make screwdrivers and such,
but Wiha is this specialized hand tools maker that seems to be the
top of the game at this.
Radu.
On Sun, Jun 30, 2024 at 11:20?AM Dave Daniel via groups.io
<> <kc0wjn@...
<mailto:[email protected]>> wrote:
__
I own several sets of tools made by Wiha. Most of them have
survived decades of steady use without noticeable wear and they
perform very well. I even purchased a set of Posidrive
screwdrivers specifically for use on HP equipment. It has gotten
to the point where if I need a hand tool for my lab, I look at
Wiha first. For the shop, SK Wayne.
DaveD
On 6/30/2024 12:34 PM, Radu Bogdan Dicher via groups.io
<> wrote:
Renee,
That's a great recommendation - I have a screwdriver or two by
Wiha and they're top notch. Thank you.
I just ordered a set of those hexes and the price is actually
surprisingly?low.
Radu.
On Sun, Jun 30, 2024 at 9:32?AM Radu Dicher
<vondicher@... <mailto:vondicher@...>> wrote:
Steve,
I've heard good things about Kroil, and it's probably time
I bit the bullet, but I'm a little apprehensive about
applying it to a plastic part that's as conspicuous as a
knob is. Is this totally harmless to plastic? I'd hate to
get discoloration or other damage when trying to reuse
those knobs.
Thanks!
Radu.
On Sun, Jun 30, 2024 at 9:05?AM Steve Hendrix via
groups.io <>
<SteveHx@...
<mailto:[email protected]>> wrote:
On 2024-06-30 11:51 AM, Radu Bogdan Dicher wrote:
> Hi all,
> I'm often running into the situation where, trying
to remove to
> replace knobs on HP (and any number of brands)
units, I need to use
> very small hex or other types of bits which get
ruined very easily,
> sometimes on first use. These bits are from sources
such as Amazon,
> where very good assortments and sets are easily
available. The steel
> they use may not be of top notch quality.
Before you ruin any more bits or setscrews, get some
Kroil. Best
penetrating oil I've ever used, and I learned about it
here or on the
similar Tek group. I've used it to free things that I
had given up as
hopeless. Apply a bit as close to the threads as you
can get, wait an
hour or so and hit it again, and try moving it a few
minutes later.
Steve Hendrix
<> Virus-free.www.avast.com <>
<#m_-6592016301543644223_m_955355997119381868_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
--
Dave McGuire, AK4HZ
New Kensington, PA
|
Re: Durable small hex (etc) bits?
If you are looking for small precision JIS style cross point screw drivers, aka phillips head, Vessel makes very good sets. I use them on camera lenses since JIS is just enough different from phillips, a normal phillips driver will strip them out. JIS = Japanese Industrial Standard if I recall correctly.
On Sun, Jun 30, 2024, 13:51 Radu Bogdan Dicher via <vondicher= [email protected]> wrote: For Posidrive I have a set of this "lesser name" brand Dave recommended (which is excellent; I find myself using it for just about everything "cross" driving). Can't think of the name.? Not to advertise too strongly, but my favorite brand of tools is Milwaukee. Expensive, but their power tools are indestructible and supremely competent (IMHO). They also make screwdrivers and such, but Wiha is this specialized hand tools maker that seems to be the top of the game at this.? Radu.?
I own several sets of tools made by Wiha. Most of them have survived
decades of steady use without noticeable wear and they perform very
well. I even purchased a set of Posidrive screwdrivers specifically
for use on HP equipment. It has gotten to the point where if I need
a hand tool for my lab, I look at Wiha first. For the shop, SK
Wayne.
DaveD
On 6/30/2024 12:34 PM, Radu Bogdan
Dicher via wrote:
Renee,
That's a great recommendation - I have a screwdriver or two
by Wiha and they're top notch. Thank you.?
I just ordered a set of those hexes and the price is
actually surprisingly?low.
Radu.?
On Sun, Jun 30, 2024 at
9:32?AM Radu Dicher < vondicher@...>
wrote:
Steve,
I've heard good things about Kroil, and it's probably
time I bit the bullet, but I'm a little apprehensive about
applying it to a plastic part that's as conspicuous as a
knob is. Is this totally harmless to plastic? I'd hate to
get discoloration or other damage when trying to reuse
those knobs.?
Thanks!
Radu.?
On
2024-06-30 11:51 AM, Radu Bogdan Dicher wrote:
> Hi all,
> I'm often running into the situation where, trying to
remove to
> replace knobs on HP (and any number of brands) units,
I need to use
> very small hex or other types of bits which get
ruined very easily,
> sometimes on first use. These bits are from sources
such as Amazon,
> where very good assortments and sets are easily
available. The steel
> they use may not be of top notch quality.
Before you ruin any more bits or setscrews, get some
Kroil. Best
penetrating oil I've ever used, and I learned about it
here or on the
similar Tek group. I've used it to free things that I had
given up as
hopeless. Apply a bit as close to the threads as you can
get, wait an
hour or so and hit it again, and try moving it a few
minutes later.
Steve Hendrix
|
G8VKB beat me to it. The C connector is a high voltage rated connector with no commonality to N or BNC. They have tapered, contacting insulators that provide longer breakdown paths. They were devoped for pulse radar applications like IFF Tacan and pulse radar altimeters. While baynet the tolerance and tapered insulators mean they don't wobble around like cheap BNCs.
They were also popular in radiation measurement equipment.
?
|
Re: Durable small hex (etc) bits?
For Posidrive I have a set of this "lesser name" brand Dave recommended (which is excellent; I find myself using it for just about everything "cross" driving). Can't think of the name.? Not to advertise too strongly, but my favorite brand of tools is Milwaukee. Expensive, but their power tools are indestructible and supremely competent (IMHO). They also make screwdrivers and such, but Wiha is this specialized hand tools maker that seems to be the top of the game at this.? Radu.?
I own several sets of tools made by Wiha. Most of them have survived
decades of steady use without noticeable wear and they perform very
well. I even purchased a set of Posidrive screwdrivers specifically
for use on HP equipment. It has gotten to the point where if I need
a hand tool for my lab, I look at Wiha first. For the shop, SK
Wayne.
DaveD
On 6/30/2024 12:34 PM, Radu Bogdan
Dicher via wrote:
Renee,
That's a great recommendation - I have a screwdriver or two
by Wiha and they're top notch. Thank you.?
I just ordered a set of those hexes and the price is
actually surprisingly?low.
Radu.?
On Sun, Jun 30, 2024 at
9:32?AM Radu Dicher < vondicher@...>
wrote:
Steve,
I've heard good things about Kroil, and it's probably
time I bit the bullet, but I'm a little apprehensive about
applying it to a plastic part that's as conspicuous as a
knob is. Is this totally harmless to plastic? I'd hate to
get discoloration or other damage when trying to reuse
those knobs.?
Thanks!
Radu.?
On
2024-06-30 11:51 AM, Radu Bogdan Dicher wrote:
> Hi all,
> I'm often running into the situation where, trying to
remove to
> replace knobs on HP (and any number of brands) units,
I need to use
> very small hex or other types of bits which get
ruined very easily,
> sometimes on first use. These bits are from sources
such as Amazon,
> where very good assortments and sets are easily
available. The steel
> they use may not be of top notch quality.
Before you ruin any more bits or setscrews, get some
Kroil. Best
penetrating oil I've ever used, and I learned about it
here or on the
similar Tek group. I've used it to free things that I had
given up as
hopeless. Apply a bit as close to the threads as you can
get, wait an
hour or so and hit it again, and try moving it a few
minutes later.
Steve Hendrix
|
Re: Durable small hex (etc) bits?
Hi Radu:
I've had good luck with the I Fix It tool sets.
--
Have Fun,
Brooke Clarke
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.
|
Re: Durable small hex (etc) bits?
I own several sets of tools made by Wiha. Most of them have survived
decades of steady use without noticeable wear and they perform very
well. I even purchased a set of Posidrive screwdrivers specifically
for use on HP equipment. It has gotten to the point where if I need
a hand tool for my lab, I look at Wiha first. For the shop, SK
Wayne.
DaveD
On 6/30/2024 12:34 PM, Radu Bogdan
Dicher via groups.io wrote:
Renee,
That's a great recommendation - I have a screwdriver or two
by Wiha and they're top notch. Thank you.?
I just ordered a set of those hexes and the price is
actually surprisingly?low.
Radu.?
On Sun, Jun 30, 2024 at
9:32?AM Radu Dicher < vondicher@...>
wrote:
Steve,
I've heard good things about Kroil, and it's probably
time I bit the bullet, but I'm a little apprehensive about
applying it to a plastic part that's as conspicuous as a
knob is. Is this totally harmless to plastic? I'd hate to
get discoloration or other damage when trying to reuse
those knobs.?
Thanks!
Radu.?
On
2024-06-30 11:51 AM, Radu Bogdan Dicher wrote:
> Hi all,
> I'm often running into the situation where, trying to
remove to
> replace knobs on HP (and any number of brands) units,
I need to use
> very small hex or other types of bits which get
ruined very easily,
> sometimes on first use. These bits are from sources
such as Amazon,
> where very good assortments and sets are easily
available. The steel
> they use may not be of top notch quality.
Before you ruin any more bits or setscrews, get some
Kroil. Best
penetrating oil I've ever used, and I learned about it
here or on the
similar Tek group. I've used it to free things that I had
given up as
hopeless. Apply a bit as close to the threads as you can
get, wait an
hour or so and hit it again, and try moving it a few
minutes later.
Steve Hendrix
|
Jinxie
Cubdriver
Dave McGuire