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MIR (General)
hiromi.yasui - 11:05 Friday 27 August 2021 (18035) Print this report
First Contact applying lesson
[Hirata-san, Fabian-san, Ushiba-san, Yasui]

(August 26, 2021)
Ushiba-san showed us how to apply First Contact.

First of all, we removed the FC, that applied on August 25, with Top gun.
And we practiced applying First Contact vertically on the side of the dummy mass.

Our practice sessions are saved in the following link.
https://photos.app.goo.gl/3WsxLf92gnTsSFKc9
Comments to this report:
hiromi.yasui - 17:17 Friday 27 August 2021 (18042) Print this report
[Hirata-san, Yasui]
We continued to practice of FC work.

First of all, we peeled off the FC, applied yesterday.
And then, we set the dummy mass vertically with jig like this(please see photo).
We applied FC on this mass, recorded with Miyoki-san's video camera, and confirmed them repeatedly.
hiromi.yasui - 17:52 Monday 30 August 2021 (18075) Print this report
With Hirata-san,

We practiced applying FC on the dummy mass vertically, without the jig.
And we checked the recorded video whether a brush touch the surface of the mass or not.
hiromi.yasui - 17:59 Tuesday 31 August 2021 (18090) Print this report
I continued First Contact lesson.
I measured the time it took for the FC solution to reach a easy handling state.
The solution seemed to be easier to handle 20 minutes after transferring it to the cup, I felt.
hiromi.yasui - 17:22 Thursday 02 September 2021 (18110) Print this report
I set up the glass plate in draft camber for First Contact lesson.
I will apply the FC on this plate tomorrow.
Images attached to this comment
hiromi.yasui - 17:37 Friday 03 September 2021 (18145) Print this report
[Hirata-san, Fabian-san]

We tried applying First Contact on the glass plate.
Images attached to this comment
hiromi.yasui - 17:31 Monday 06 September 2021 (18165) Print this report
I applied First Contact on the glass plate with jig.
I tend to let the FC solution drip to the bottom side...
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hiromi.yasui - 16:19 Thursday 09 September 2021 (18209) Print this report

I applied the First Contact on the full glass plate with jig.

It takes about 2 hours to applied the first layer, today.

Non-image files attached to this comment
hiromi.yasui - 16:07 Friday 10 September 2021 (18230) Print this report

The draft chamber has been repaired ( Takase-san intermediated this work ).

I trained to apply the First Contact  especially on the edge site of the plate,

but some FC solution drip reached to the jig.

Images attached to this comment
hiromi.yasui - 17:30 Tuesday 14 September 2021 (18255) Print this report

I trained to apply the First Contact on the glass plate.

When I had impatience, greed and exhaustion, the FC solution dripped down to the jig.

Images attached to this comment
hiromi.yasui - 16:49 Friday 17 September 2021 (18297) Print this report
Yesterday, Aso-san showed me the SR2 and SR3 mirror.
So I trained to apply the First Contact on the glass plate in a situation that mimics the SR2 AR side, using some obstacles.
 
 
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hiromi.yasui - 17:23 Tuesday 21 September 2021 (18323) Print this report

I trained to apply the First Contact, especially the first layer, on the glass plate.

Images attached to this comment
hiromi.yasui - 16:30 Friday 24 September 2021 (18344) Print this report

I had training to apply the First Contact on the glass plate with the jig for BS so that I could train to apply the FC widely.
I applied the edge of the circle first, then applied from top down.
It took about two hours to apply one coat today, but I think it'll take more longer out of the draft.

Images attached to this comment
hiromi.yasui - 17:28 Monday 04 October 2021 (18438) Print this report

I practiced applying the First Contact on the glass plate.

And I also tried to put a tab for peeling.

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hiromi.yasui - 17:00 Tuesday 05 October 2021 (18457) Print this report

I continued with the practice of applying First Contact and putting a peeling tab.

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hiromi.yasui - 17:35 Monday 11 October 2021 (18529) Print this report

I practiced applying the First Contact on the glass plate.

Recent FC couldn't peel off properly because a peeling tab didn't adhere to the edge.

So today, I carefully applied a layer of FC over the peeling tab.

Images attached to this comment
hiromi.yasui - 17:03 Friday 15 October 2021 (18597) Print this report

The previous FC was successfully peeled off with a peeling tab.
Today I practiced applying the First Contact from a distance.

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hiromi.yasui - 17:38 Friday 29 October 2021 (18739) Print this report

I practiced applying the First Contact on the glass plate, using the jig for BS.

Images attached to this comment
hiromi.yasui - 16:28 Friday 05 November 2021 (18782) Print this report

I practiced applying First Contact to the full extent of the jig.

A few drops of FC dripped down to the slightly lower side of the jig,

and when I removed the jig, FC that had not solidified yet stretched from the jig to the glass surface.

Images attached to this comment
hiromi.yasui - 16:09 Friday 12 November 2021 (18866) Print this report

I practiced applying First Contact to the full extent of the jig.

Unfortunately, a few dripped FC drops made a thin layer between the glass plate and the cover cloth of the jig, so I think it's better not to apply the FC to the very edge when applying the FC to the bottom side a mirror.

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hiromi.yasui - 16:42 Friday 03 December 2021 (19077) Print this report

I practiced applying the First Contact.

At the last practice, a few dripped FC drops made a thin layer between the glass plate and the cover cloth of the jig, but today I was able to peel that thin layer quite nicely.

In today's work, I applied FC to the full extent of the jig. When I pulled the jig away from the glass plate, the edge of the FC peeled off a little.

Images attached to this comment
hiromi.yasui - 17:14 Tuesday 22 March 2022 (20186) Print this report

I practiced applying the First Contact using a glass plate and a jig for the HR of SR mirrors.

 

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