maurizio63

[maurizio63]

I did some tests by shielding the LED light with various types of paper and I took some photos.
The premium 3 they are made with the copper lattice and the others with the printed lattice
http://s3.postimg.cc/wmj5cvqhv/IMG_20150322_130513.jpg
http://s27.postimg.cc/dl6p18rtf/IMG_20150322_130440.jpg
http://s9.postimg.cc/r95z92az3/IMG_20150322_130436.jpg
http://s9.postimg.cc/hkx4jo5jj/IMG_20150322_124453.jpg
http://s21.postimg.cc/3w4fvkpwn/IMG_20150322_124219.jpg
http://s2.postimg.cc/sbv0myk09/IMG_20150322_122249.jpg
http://s11.postimg.cc/ahzruah9f/IMG_20150322_112123.jpg
http://s29.postimg.cc/yal5y0mc7/IMG_20150322_124100.jpg

[maurizio63]

Ok I'll do some tests ,but how much should be the distance between source and grating?
and why it can lead to these kinds of errors

[maurizio63]

Hi Massimo,
the third photo e’ made with a lattice printed on glossy paper and I played with the effects a bit to see how it looked,the others are made with a copper lattice made by me

[maurizio63]

Hello guys, for a few weeks I couldn't work the mirror due to family commitments but today
I've been on it for circe 4 hours and something e’ changed(I'm getting closer to the sphere) but I still can't understand why I have these irregular Ronchi bands, yet I made the tar candies again (now they are softer), the temperature always around 20 degrees. When I take the photos I have some light in my opinion a little strong I tried to narrow the gap between the blades ,but nothing.
I don't know where this is going.
I show you some photos all intrafocal
http://s14.postimg.cc/kefk1pu69/IMG_20150321_100211.jpg
http://s21.postimg.cc/i7llo18lj/IMG_20150321_102336.jpg
http://s15.postimg.cc/5g9ygazff/IMG_20150321_104005.jpg
http://s10.postimg.cc/e6scut03d/IMG_20150321_120653.jpg
http://s3.postimg.cc/irud0plyr/IMG_20150321_142000.jpg

[maurizio63]

I work in the heated environment around 19 – 20 degrees and therefore even if I do’ a hole in the water I want to try again with the same tool trying to make the adaptation as advised by all of you,then if things don't change I'll make the softest candies again, because my goal is’ also gain experience even if this will lengthen my time(I'm not in a hurry).
However, your advice is always very useful and I thank you.

[maurizio63]

I probably have a bit hard pitch to give you an idea with the tool stopped for a few hours
I can barely leave the imprint of the nail.
You advise me to remake the softer candies?

[maurizio63]

hello Mirco, the utensil I use is the same size as the mirror with pitch candies

[maurizio63]

Hi guys,
I think I exaggerated with the past 1/4 COC and now I find myself in this condition (photo below) and comparing with Ronchi for Windows software 2.0 it seems a parable but inverted that is’ what I should find intrafocal I find myself extrafocal and vice versa.
I think I made the mistake of not doing the ronchi test several times during processing.
Now I have to go back to 1/3 COC to return to the sphere?
Or there are other solutions?

http://s29.postimg.cc/jxvo864lj/intrafocale1.jpg
http://s10.postimg.cc/pzz64acqh/intrafocale.jpg
http://s7.postimg.cc/ha0xwivnv/intrafocale2.jpg
http://s12.postimg.cc/vb1mc4ial/extrafocale.jpg

[maurizio63]

Thanks Giulio.
Sincerely,I was a little’ discouraged seeing the craters from 100 microns, but you pulled me back
with your words.

For the photos I take them with a smartphone with a camera 13 megapixel

[maurizio63]

photo craters
http://s18.postimg.cc/67878rthl/IMG_20150201_131229.jpg
http://s17.postimg.cc/yg70tguf3/IMG_20150201_130844.jpg
http://s29.postimg.cc/jp827ulrb/IMG_20150201_131632.jpg
http://s14.postimg.cc/j9qi5u1i9/IMG_20150201_131722.jpg
http://s30.postimg.cc/56k7sbcdd/IMG_20150201_131732.jpg
http://s27.postimg.cc/lcqoeklhf/IMG_20150201_131929.jpg
http://s16.postimg.cc/yudrseqet/IMG_20150201_132041.jpg
http://s27.postimg.cc/xno8cdww3/IMG_20150201_132048.jpg

[maurizio63]

Hi guys I have a doubt(one of many) with the microscope recommended by Giulio, I am seeing that there are still many craters, most concentrated in the center of the mirror and very small like a needle point but there are some large ones and also some scratches that I cannot remove ,these craters have the size on the graduated scale of the microscope from 2 until 5 notches and I'm wondering whether to go back some kind of grain 600.
What do you think?

[maurizio63]

Thanks guys for the advice.

[maurizio63]

I made the ronchi with fishing line 0.01 5 lines x mm but the wire was transparent and does not have a good contrast I also tried the printed one but it seems worse to me, anyway I did some photos all intrafocal because extrafocal I can't,all photos are taken with a mobile phone.
You think I can continue polishing or I have to do something for the edge?

http://s8.postimg.cc/erywk9rn9/IMG_20150125_175035_3.jpg
http://s12.postimg.cc/nftxgooq5/IMG_20150125_180609_3.jpg
http://s29.postimg.cc/xjtrqr1p3/Immagine22.jpg

[maurizio63]

Sorry I did some tests .

[maurizio63]

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