Getting out teeny, tiny seized screw

**c.a.m** · 10-15-2020, 05:36 PM

Originally posted by AstroDave

GOT IT OUT!

Yay!

Isn't it a gleeful moment when the screw releases?

- Craig

**AstroDave** · 10-15-2020, 05:58 PM

Originally posted by Viking42

BTW, I'm intrigued by your monochrome camera conversion. I will take the time soon to read through your link soon. Thanks for posting that!

This reference describes how to replace the IR filter. My goal is to get inside the camera, down to the sensor, and scrape off the Bayer filter that is right on the sensor.

I will definitely post my results. I am appalled that one can not buy a digital B&W camera for less then $6k or so! The sensors are intrinsically broadband. Even the cheapest (under $20) video monitors and backup cameras are all color.

The ultimate intent is to have a B&W camera that responds across all wavelengths (to within the characteristics of the CCD/CMOS itself), so I don't have to worry about what the RGB filtering has done to the wavelength response. I am hoping to characterize the spectrum of various light sources. I have built my own little spectragraph and just need a proper sensor for it. (I'm too cheap to buy the $500+ options!)

---------- Post added 10-15-20 at 05:59 PM ----------

Originally posted by c.a.m

Isn't it a gleeful moment when the screw releases?

Yeah, verily!!!!!!!!!!!

**c.a.m** · 10-15-2020, 06:16 PM - **1 Like**

Originally posted by AstroDave

Yeah, verily!!!!!!!!!!!

I had a similar experience a month ago. Needed to change out a diverter valve in a bathtub shower. Easy job, I think. I'll take out the old cartridge, go to my local Lowe's for a replacement, get back and install. An hour max.... Except the old cartridge is seized in the fixture and it ain't moving nowhere. Ok, PB B'laster time (penetrating compound). Tap, tap, tap. No go. Let sit for a while. Still seized.

I'm now getting visions of a complete tear-out of the entire faucet assembly, and my dear wife is asking "how's it going up there?". A bit more pentetrant; let sit for several hours. Try again... tap, tap, tap, rock the wrench back and forth with a bit of persuasion. And then, that magical, glorious moment. Ahhh. Remove, inspect, clean the fixture, apply a bit of silicone to the new cartridge. Install. Test. Ta da.

Didn't I say an hour max?

(sorry for the diversion... I thought this was the DIY plumbing forum).

- Craig

**Viking42** · 10-15-2020, 06:56 PM - **1 Like**

Originally posted by c.a.m

I had a similar experience a month ago. Needed to change out a diverter valve in a bathtub shower. Easy job, I think. I'll take out the old cartridge, go to my local Lowe's for a replacement, get back and install. An hour max.... Except the old cartridge is seized in the fixture and it ain't moving nowhere. Ok, PB B'laster time (penetrating compound). Tap, tap, tap. No go. Let sit for a while. Still seized.

I'm now getting visions of a complete tear-out of the entire faucet assembly, and my dear wife is asking "how's it going up there?". A bit more pentetrant; let sit for several hours. Try again... tap, tap, tap, rock the wrench back and forth with a bit of persuasion. And then, that magical, glorious moment. Ahhh. Remove, inspect, clean the fixture, apply a bit of silicone to the new cartridge. Install. Test. Ta da.

Didn't I say an hour max?

(sorry for the diversion... I thought this was the DIY plumbing forum).

- Craig

SO TRUE! After almost 3 decades of home ownership and multiple renovations, I've learned the bitter truth that any estimate of how long a job will take should automatically be tripled. An hour, you say? Ha! More like three

. And keep the liquor cabinet well stocked for a post-job (or mid-job) soothing tonic.

**AstroDave** · 10-15-2020, 07:01 PM

Originally posted by c.a.m

(sorry for the diversion... I thought this was the DIY plumbing forum).

Could be!

I got to replace the garbage disposal a few weeks ago, when we discovered a near flood underneath the sink. Can't really complain, though - that unit was guaranteed for only 2 years, and made it to 17.

That was another "hour" job which required an extra trip to Home Depot (after I already bought the new disposal unit).

ps I've also done the shower diverter valve (fortunately in the back-up, back-up bathroom - it helps to have 4 bathrooms for only 2 people, so no rush)

**Viking42** · 10-15-2020, 07:08 PM

Originally posted by AstroDave

This reference describes how to replace the IR filter. My goal is to get inside the camera, down to the sensor, and scrape off the Bayer filter that is right on the sensor.

I will definitely post my results. I am appalled that one can not buy a digital B&W camera for less then $6k or so! The sensors are intrinsically broadband. Even the cheapest (under $20) video monitors and backup cameras are all color.

The ultimate intent is to have a B&W camera that responds across all wavelengths (to within the characteristics of the CCD/CMOS itself), so I don't have to worry about what the RGB filtering has done to the wavelength response. I am hoping to characterize the spectrum of various light sources. I have built my own little spectragraph and just need a proper sensor for it. (I'm too cheap to buy the $500+ options!)[COLOR="Silver"]

Yes, please post back with how this worked out. Agreed, $6K for a monochrome camera is ridiculous. That said, I've looked at the output from that Leica (which I believe is what you're referring to), and it's really fantastic. I've been struggling to get good B&W results from my K5ii and K10D that at least approach what I get with film. Not even close so far. So the idea of a conversion really perks up my interest. I will have to do more digging into all this Bayer filter stuff. Very interesting!

All the best with this project.

Svend

**ProfessorBuzz** · 10-16-2020, 10:08 AM

Originally posted by AstroDave

My goal is to get inside the camera, down to the sensor, and scrape off the Bayer filter that is right on the sensor.

That's a pretty risky proposition. Most of the sensors have a microlens array and the dye layer is often a part of it. So if you remove the cover glass that is part of the package of the sensor, then you'll get access to the microlens+dye matrix.
I'm concerned you'll lose the microlenses and thus decrease the efficiency of the sensor.

Let us know how it goes.

**AstroDave** · 10-16-2020, 12:15 PM

Originally posted by ProfessorBuzz

That's a pretty risky proposition. Most of the sensors have a microlens array and the dye layer is often a part of it. So if you remove the cover glass that is part of the package of the sensor, then you'll get access to the microlens+dye matrix.
I'm concerned you'll lose the microlenses and thus decrease the efficiency of the sensor.

Yeah, I realize that, but my prime interest is to use this as a spectrograph camera - for generally bright sources, so reduced sensitivity shouldn't be a problem. I can expose as long as I want.

Originally posted by ProfessorBuzz

Let us know how it goes.

I sure will!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Teeny tiny screws - where to find ?	Astro-Baby	Film SLRs and Compact Film Cameras	16	01-14-2019 03:45 PM
Smuggled Camera Gear Worth Over $60 Million Seized in China	TOUGEFC	Pentax DSLR Discussion	4	04-08-2012 01:25 PM
Nature Teeny Tiny	sealonsf	Post Your Photos!	4	01-08-2010 10:54 PM
Teeny tiny Finnish apples	brkl	Post Your Photos!	3	09-11-2009 07:35 PM
Tiny Tiny tiny!	rmtagg	Post Your Photos!	11	03-24-2008 05:18 AM

10-15-2020, 05:36 PM	#16
c.a.m Site Supporter Join Date: Jan 2013 Location: Ottawa, Canada Photos: Gallery \| Albums Posts: 4,193	Originally posted by AstroDave GOT IT OUT! Yay! Isn't it a gleeful moment when the screw releases? - Craig

10-15-2020, 05:58 PM	#17
AstroDave Loyal Site Supporter Join Date: May 2007 Location: Flagstaff, Arizona Posts: 1,648 Original Poster	Originally posted by Viking42 BTW, I'm intrigued by your monochrome camera conversion. I will take the time soon to read through your link soon. Thanks for posting that! This reference describes how to replace the IR filter. My goal is to get inside the camera, down to the sensor, and scrape off the Bayer filter that is right on the sensor. I will definitely post my results. I am appalled that one can not buy a digital B&W camera for less then $6k or so! The sensors are intrinsically broadband. Even the cheapest (under $20) video monitors and backup cameras are all color. The ultimate intent is to have a B&W camera that responds across all wavelengths (to within the characteristics of the CCD/CMOS itself), so I don't have to worry about what the RGB filtering has done to the wavelength response. I am hoping to characterize the spectrum of various light sources. I have built my own little spectragraph and just need a proper sensor for it. (I'm too cheap to buy the $500+ options!) ---------- Post added 10-15-20 at 05:59 PM ---------- Originally posted by c.a.m Isn't it a gleeful moment when the screw releases? Yeah, verily!!!!!!!!!!!

10-15-2020, 06:16 PM - 1 Like	#18
c.a.m Site Supporter Join Date: Jan 2013 Location: Ottawa, Canada Photos: Gallery \| Albums Posts: 4,193	Originally posted by AstroDave Yeah, verily!!!!!!!!!!! I had a similar experience a month ago. Needed to change out a diverter valve in a bathtub shower. Easy job, I think. I'll take out the old cartridge, go to my local Lowe's for a replacement, get back and install. An hour max.... Except the old cartridge is seized in the fixture and it ain't moving nowhere. Ok, PB B'laster time (penetrating compound). Tap, tap, tap. No go. Let sit for a while. Still seized. I'm now getting visions of a complete tear-out of the entire faucet assembly, and my dear wife is asking "how's it going up there?". A bit more pentetrant; let sit for several hours. Try again... tap, tap, tap, rock the wrench back and forth with a bit of persuasion. And then, that magical, glorious moment. Ahhh. Remove, inspect, clean the fixture, apply a bit of silicone to the new cartridge. Install. Test. Ta da. Didn't I say an hour max? (sorry for the diversion... I thought this was the DIY plumbing forum). - Craig

10-15-2020, 06:56 PM - 1 Like	#19
Viking42 Site Supporter Join Date: Aug 2020 Location: Caledon, Ontario, Canada Photos: Albums Posts: 504	Originally posted by c.a.m I had a similar experience a month ago. Needed to change out a diverter valve in a bathtub shower. Easy job, I think. I'll take out the old cartridge, go to my local Lowe's for a replacement, get back and install. An hour max.... Except the old cartridge is seized in the fixture and it ain't moving nowhere. Ok, PB B'laster time (penetrating compound). Tap, tap, tap. No go. Let sit for a while. Still seized. I'm now getting visions of a complete tear-out of the entire faucet assembly, and my dear wife is asking "how's it going up there?". A bit more pentetrant; let sit for several hours. Try again... tap, tap, tap, rock the wrench back and forth with a bit of persuasion. And then, that magical, glorious moment. Ahhh. Remove, inspect, clean the fixture, apply a bit of silicone to the new cartridge. Install. Test. Ta da. Didn't I say an hour max? (sorry for the diversion... I thought this was the DIY plumbing forum). - Craig SO TRUE! After almost 3 decades of home ownership and multiple renovations, I've learned the bitter truth that any estimate of how long a job will take should automatically be tripled. An hour, you say? Ha! More like three . And keep the liquor cabinet well stocked for a post-job (or mid-job) soothing tonic.

10-15-2020, 07:01 PM	#20
AstroDave Loyal Site Supporter Join Date: May 2007 Location: Flagstaff, Arizona Posts: 1,648 Original Poster	Originally posted by c.a.m (sorry for the diversion... I thought this was the DIY plumbing forum). Could be! I got to replace the garbage disposal a few weeks ago, when we discovered a near flood underneath the sink. Can't really complain, though - that unit was guaranteed for only 2 years, and made it to 17. That was another "hour" job which required an extra trip to Home Depot (after I already bought the new disposal unit). ps I've also done the shower diverter valve (fortunately in the back-up, back-up bathroom - it helps to have 4 bathrooms for only 2 people, so no rush)

10-15-2020, 07:08 PM	#21
Viking42 Site Supporter Join Date: Aug 2020 Location: Caledon, Ontario, Canada Photos: Albums Posts: 504	Originally posted by AstroDave This reference describes how to replace the IR filter. My goal is to get inside the camera, down to the sensor, and scrape off the Bayer filter that is right on the sensor. I will definitely post my results. I am appalled that one can not buy a digital B&W camera for less then $6k or so! The sensors are intrinsically broadband. Even the cheapest (under $20) video monitors and backup cameras are all color. The ultimate intent is to have a B&W camera that responds across all wavelengths (to within the characteristics of the CCD/CMOS itself), so I don't have to worry about what the RGB filtering has done to the wavelength response. I am hoping to characterize the spectrum of various light sources. I have built my own little spectragraph and just need a proper sensor for it. (I'm too cheap to buy the $500+ options!)[COLOR="Silver"] Yes, please post back with how this worked out. Agreed, $6K for a monochrome camera is ridiculous. That said, I've looked at the output from that Leica (which I believe is what you're referring to), and it's really fantastic. I've been struggling to get good B&W results from my K5ii and K10D that at least approach what I get with film. Not even close so far. So the idea of a conversion really perks up my interest. I will have to do more digging into all this Bayer filter stuff. Very interesting! All the best with this project. Svend

10-16-2020, 10:08 AM	#22
ProfessorBuzz Loyal Site Supporter Join Date: Feb 2018 Posts: 1,903	Originally posted by AstroDave My goal is to get inside the camera, down to the sensor, and scrape off the Bayer filter that is right on the sensor. That's a pretty risky proposition. Most of the sensors have a microlens array and the dye layer is often a part of it. So if you remove the cover glass that is part of the package of the sensor, then you'll get access to the microlens+dye matrix. I'm concerned you'll lose the microlenses and thus decrease the efficiency of the sensor. Let us know how it goes.

10-16-2020, 12:15 PM	#23
AstroDave Loyal Site Supporter Join Date: May 2007 Location: Flagstaff, Arizona Posts: 1,648 Original Poster	Originally posted by ProfessorBuzz That's a pretty risky proposition. Most of the sensors have a microlens array and the dye layer is often a part of it. So if you remove the cover glass that is part of the package of the sensor, then you'll get access to the microlens+dye matrix. I'm concerned you'll lose the microlenses and thus decrease the efficiency of the sensor. Yeah, I realize that, but my prime interest is to use this as a spectrograph camera - for generally bright sources, so reduced sensitivity shouldn't be a problem. I can expose as long as I want. Originally posted by ProfessorBuzz Let us know how it goes. I sure will!