Translucent additive?

What do you mean by translucent?

The definitions of 3 related terms are:

Transparent - light goes through it and you can see through it.

Translucent - light goes through it but you can’t see through it.

Opaque - light doesn’t go through it and you can’t see through it.

Do you mean pearlescent (having a surface like a pearl)? Pearlescent ink does exist but, unless someone else has a source for it, you would have to talk to an ink supplier about it. I think Van Son’s website has a help line so maybe they could help you.

Sorry, I don’t know what you mean by “sheer.” Good luck, I hope you find what you are looking for.

A transparent tint will be available for your ink. I use Van Son Rubber based ink. So, say I have a green and I want run it as a tint I start with the transparent base tint (bought by the pound) and add some green (not ever mixed using opaque white in this instance) and I will get a colour which is a beautiful tint off the press. If I overprint a colour it will mix on the press. Also it mixes with the paper colour. Beautiful! Just be prepared to experiment a little. Two or even three blocks can be overlapped and where they do you will get a darker but interesting colour either by design or by happy accident!
You can cut these using lino mounted type high. The beauty of letterpress!

A transparent tint will be available for your ink. I use Van Son Rubber based ink. So, say I have a green and I want run it as a tint I start with the transparent base tint (bought by the pound) and add some green (not ever mixed using opaque white in this instance) and I will get a colour which is a beautiful tint off the press. If I overprint a colour it will mix on the press. Also it mixes with the paper colour. Beautiful! Just be prepared to experiment a little. Two or even three blocks can be overlapped and where they do you will get a darker but interesting colour either by design or by happy accident!
You can cut these using lino mounted type high. The beauty of letterpress!

Thanks to all. Lasimp - is the transparent base neutral or is it ordered in a base color? Thanks.

Sheer- relating to translucent, transparently thin, shinny (mostly referred to textiles)

I think what you are after is “mixing white”. It is pretty clear. It has a slight yellow tinge to it, so keep that in mind when mixing your colors - hope this helps you!

Thanks to all.

sorry bit late on this comment. I use Van son and its a neutral colour. it can be tricky to evaluate when mixing so just add a tad of colour and test and slowly ad more colour until you are there. A couple of points:
rollers need to be perfectly clean,
like all ink mixing if you go too dark, you cant really lighten it by adding more of the lighter component be it tint or white.
store it and start again.