Through the microscope

Posts tagged ‘gloss’

Bloody paint!

Bloody paint is driving me mad!

I mixed my black hammerite paint in a 1:1 ratio satin:gloss, I thinned it a bit (15% ish) and used a gloss roller to apply it to the Cooke Troughton and Simms microscope.

The paint is full of little bubbles.

ARGHHH! I’ve used gloss rollers on doors with no problems at all, but it seems they dislike metal. If I’d known i’d have layed off the paint a brush or used a brush to start with. I’m going to have to wait for it to dry and sand it for the umpteenth time.

On the plus side I think the 50/50 ratio of satin:gloss might be correct. I think. I’ll have to wait until it’s completely dry before I can say for sure.

I have just noticed that Hammerite say that satin and smooth paints should not be mixed. I can’t imagine why. They’re all the same solvent base. I’m wondering if there’s some problem with mixing them or whether it’s just a matter of them not wanting to recommend an untested combination in the same way some clothes manufacturers put “dry clean only” labels on washable items to save the cost of testing them.  It may be that mixing the two kinds of paints makes them less than perfect for their intended use outdoors in all weathers. If so then it is of no importance to me. I shan’t be leaving my microscope exposed to the elements.

Grrr, arrghh, grumble, moan, whinge.

I will win the battle of the paint. I shall not be beaten by a bit of black pigment in solvent.

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Paint it black

I see a microscope and I want to paint it black…

Forgive me Mick Jagger and Keith Richards, I was trying to think of a witty title and that was the best I could come up with.

The story so far: Japlac is too shiny for my Cooke Troughton and Simms microscope so I tried Hammerite satin. Hammerite satin is not shiny enough. It’s a lot better than the high gloss Japlac but it’s not quite right. I have a new cunning plan; I shall mix a little gloss Hammerite in with the satin paint. I shall start with a 2:1 ratio and go from there.

I’m also going to thin it a little and use a gloss roller. I tried an ultra fine gloss roller previously and it was rubbish. I still can’t figure out why they chose a fuzzy material for the ultra fine gloss roller. I had fuzz in my paint. I’m sticking with the normal foam gloss roller in future.

I’ve buggered my hand up again. The hurtiness seems to be travelling down the tendon from my index finger towards my wrist. Maybe it will travel down my wrist, up my arm,  into my shoulder, up my neck and into my head from where I can sneeze it out?

On the other hand (pun not intended) I may have to go to the doctor.

 

Getting the paint finish right

image

I have been using Japlac on my Cooke Troughton and Simms microscopes but I have found it to have too high a sheen. No matter how much I polish the original paint work I cannot get it to a high sheen like the Japlac has. Where I have filled in cracks or chips the new paint is very obvious. I tried using emery paper to take the sheen down but then it looks too rough.

I have decided I need to abandon the Japlac. I have bought two hammerite paints: satin finish and smooth finish.

The amount of gloss a paint has can be expressed as a percentage of the light which is reflected back at an angle of 85 degrees. As no manufacturers bother to disclose this helpful information on the tin I have no option except to assess the two paints using an old fashioned method: eyesight.

I’ve painted the back of an old envelope and a dog food can to see what it looks like. As far as I can tell so far by eye, smooth means gloss finish (80% or more reflectance) and the satin is a lower sheen. Maybe 50% ?
It’s hard to guess how much light is being reflected but I think the satin paint will work out well.

Happy 2014 earthlings, I hope it’s a good one. May your microscope stands be shiny and your objectives clean and clear.

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