Foam and Your Lenses

[leon]

Hi Guys I have bought a new Sigma Lens and want to protect it in a case of sorts, so the question is this.

Is the Foam that i get from Clark Rubber suitable, or dose certain Foam have additives that my react with the sensitive equipment in the case over time.

Is there any special Foam that I should use instead, thank you in advance.

Leon

[Sunfish (Ray)]

Good question Leon.

I also would love to know the answer to that. I suppose you would need to know what the Clark foam or other stuff is made of and it might depend on temperature.

Maybe there is a reason that a Tak box is timber and natural felt besides that old school look.

Originally Posted by leon

Hi Guys I have bought a new Sigma Lens and want to protect it in a case of sorts, so the question is this.

Is the Foam that i get from Clark Rubber suitable, or dose certain Foam have additives that my react with the sensitive equipment in the case over time.

Is there any special Foam that I should use instead, thank you in advance.

Leon

[Sunfish (Ray)]

I used the Clark dark greyfoam in my telescope box despite not knowing the answer to the question. Maybe it is the Dunlop st35-200 listed here which has VOC data if you can find it

https://www.clarkrubber.com.au/pages...ty-data-sheets

[Dennis]

Hi Leo.

When camping my sleeping mat is of a "closed cell foam structure" which does not absorb moisture.

If the foam is absorbent, like a traditional sponge, it may accumulate moisture which might be undesirable.

Cheers

Dennis