Thin rollerballs

[jjudge]

Ballpoint pens are thinner than the standard rollerball kits we have available.
I have a lot of folks asking for thinner rollerballs -- like Slimline twist pen diameter.

The thinnest rollerball appears to be the Zen pen kit:
- 10.5mm inner diameter;
- 12.7 (= 1/2 inch) finished, outer diameter;

Will I have to start working out a kitless rollerball of a thin diameter?
Or, are there some thinner rollerballs out there?

-- joe

 

[ed4copies]

It just doesn't "figure"

Ballpoint pens are thinner than the standard rollerball kits we have available.
I have a lot of folks asking for thinner rollerballs -- like Slimline twist pen diameter.

The thinnest rollerball appears to be the Zen pen kit:
- 10.5mm inner diameter;
- 12.7 (= 1/2 inch) finished, outer diameter;

Will I have to start working out a kitless rollerball of a thin diameter?
Or, are there some thinner rollerballs out there?

-- joe

May want to alert your potential customers to the obvious.

What is the diameter of the rollerball refill? 0.251" - Cross brand
What is the diameter of a Cross Ballpoint refill? 0.111"

So, if you make your "new rollerball design" to the size of a Cross ballpoint pen , which is about 3/8" (don't have one here to measure), you are going to be at 0.375". Less the .251 for the refill leaves you 0.12 DIAMETER of material, of course that leaves 0.06 (that's 6/100's of an inch of material, including whatever tube you design.

I've had this conversation. After which, I suggest a Parker gel as a "happy medium".

Now, there is a Cross "gel" that really isn't (it's liquid ink), but that may help satisfy your customer.