on saleTWSBI Diamond 580 Fountain Pen - Clear

Product Code TW-M7443110

In Stock

out of stock

on saleTWSBI Diamond 580 Fountain Pen - Clear

Product Code TW-M7443110

In Stock

out of stock

$50.00
Nib Guide

Not sure which size nib is best for you?

Try our Nib Nook tool to view and compare nib widths using our writing samples. Learn more ›

ENHANCEMENT OPTIONS

The TWSBI Diamond 580 comes with a benchmark piston ink-filling mechanism and has all detachable parts. The clear demonstrator barrel allows you to see your ink color and remaining ink level. It has a clear grip section and screw-cap. It comes with a stainless steel nib and is presented in a modern clear display case.

The idea behind the TWSBI Diamond 580 was to go back to basics and capture the simplicity and elegance of traditional writing instruments. In recent years, the development and modernization of writing instruments has resulted in traditional writing instruments, such as fountain pens, falling into obscurity. It was TWSBI's goal to bring the past back to life by creating a traditional fountain pen that even modern day society can appreciate.

The TWSBI Diamond 580 is a classic fountain pen with a piston ink-filling system. By fusing the traditional mechanisms of the fountain pen with a modern industrial design, TWSBI has created an eye-catching fountain pen that is simultaneously appreciative of the past and relevant in the present.

TWSBI's belief is that it is important to allow the user to disassemble and reassemble the pen and completely experience the traditional aspects of owning and using a fountain pen. These pens also come packaged with a wrench and silicone grease. Neither of these accessories are intended to be used immediately, as they are for long-term care and maintenance. Additionally, please use extra care if you choose to disassemble the nib and feed, as the feed is very fragile.

You may notice a white substance on your 580AL or 580ALR pistons. This is white ball bearing grease, and must not be removed during cleanings, or replaced by silicone grease

Condition
New
Brand
TWSBI
Type
Fountain Pens
Color
Clear
Demonstrator

Whether or not the barrel of the pen is translucent, allowing you to see the ink and filling mechanism inside.

Yes
Body Material
Resin
Cap Rotations

For pens with a screw-cap closure, how many rotations it takes to uncap/recap the pen.

1.25
Cap Type

How the cap is opened/closed from the barrel of the pen. Some common options include Snap-Cap, Screw-Cap, Magnetic Cap, or Capless (no cap).

Screw-cap
Compatible inks & refills

Which ink this pen will accept. Choices include bottled ink and various styles of pre-filled ink cartridges.

Bottled inks
Filling Mechanism

How the pen fills with ink. Click here to watch our video tutorial on common filling mechanisms.

Piston
Grip Material
Resin
Nib Size
Extra-Fine, Fine, Medium, Broad, 1.1mm Stub
Nib Color
Silver
Nib Material
Steel
Postable

Whether or not the cap fits securely onto the back of the barrel when open.

No
Retractable

Whether or not the nib/tip can retract into the body of the pen (usually for click or twist-open style pens).

No
Trim
Silver
Diameter - Body
13.3mm (0.52in)
Diameter - Cap (without clip)
14.4mm (0.57in)
Diameter - Cap (with clip)
18.6mm (0.73in)
Diameter - Grip (mm)

Measured from the place most people choose to rest their fingers, which varies with each pen.

10.0mm
Length - Body

The measurement from the back end of the barrel to the tip of the nib.

130mm (5.12in)
Length - Cap
60mm (2.36in)
Length - Nib

The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.

19mm (0.75in)
Length - Overall (Closed)
142mm (5.59in)
Weight - Body

If a converter is included with the pen, this weight is reflected in the total.

14g (0.49oz)
Weight - Cap
14g (0.49oz)
Weight - Overall (g)
28.0g
Max Ink Capacity - Piston Vac

The maximum volume of ink that can fit in the pen when using the built-in piston or vacuum filling mechanism.

1.98ml

Customer Reviews

Based on 375 reviews
81%
(303)
12%
(46)
3%
(10)
2%
(6)
3%
(10)
G
Gao H.
Good value, but unfortunately flawed.

This is a review on this one specific pen I got, not on the company or any other product. I received this pen in a very carefully packaged box, the unboxing experience was beautiful, you can tell Goulet employees put their love in it which I am very thankful, and I will definitely comeback if I’m buying another pen.
When I found out the issue about the pen and reached out to them I received very inspiring and practical advice.
But the pen itself is flawed, the Nib I got on this one does not line up with the tongue of the pen( it was tiled toward one side) , nib is also a tiny bit scratchy which lead to my decision of wanting to swap the nib, then I found out the head of my pen(the part that is holding the nib) doesn’t unthread. I called the customer service and yes I received very practical advices but after doing what I was told to, they situation was better —- I am able to move and rotate the grip part slightly, but still it isn’t enough to unthread the grip. So the service and the advice is helpful and is working, but the pen itself is flawed.
I think I might just got unlucky and got the flawed one, because my friend in CA. ordered the same product(different color) and it doesn’t have any of the issue I encountered.

D
David F.L.
Definitely a fantastic pen

I love this pen with the extra fine nib. I have it paired with noodlers night shade and it writes like a dream that I had to buy another 580

S
Sean M.
Great Pen, Great Value

So I am relatively new to fountain pens, mainly avoiding them from pervious experiences long ago with mixed results and premium prices. I now have used the Lamy Safari, TWSBI Eco and the TWSBI Diamond. Of the three I now own, the Diamond is my favorite for the textured body and smooth cap and the chrome accents. I own the medium nib and it has written smoothly and never dries out as long as I keep it capped. All three are great pens, but I enjoy the diamond the most.

D
Deb
Nice pen but not my style

It's a nice enough pen and but I wouldn't purchase this brand again as it just doesn't suit me. I don't care for the screw cap or for the feel of it in my hand as I write. I'm going to clean it and pass it along to someone who will love it.

J
Jim W.
Excellent Pen From an Excellent Dealer

The 580 is one of my favorite pens and every transaction I've had with Goulet has been first class. Very satisfied customer here!!

FAQs about Fountain Pens

How do I fill a fountain pen with ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the pen's filling mechanism, which you can find in the Technical Specs section above. 

Here's a quick definition of the most common filling mechanisms:

  • Cartridge - A small, disposable, sealed plastic reservoir that holds fountain pen ink. These come pre-filled with ink, and typically you just push to insert them into place and you'll be ready to write! Check out our quick guide here.
  • Converter - A detachable and refillable ink reservoir that allows you to use bottled ink in a cartridge-accepting pen. Typically you will install the converter into the grip section, dip the nib/feed into the ink, and twist or pull the converter knob to draw ink into the converter. Here's a video for how to fill a cartridge/converter pen using a LAMY pen as an example.
  • Eyedropper - A pen that utilizes the entire barrel as a reservoir for ink. Ink is directly filled into the barrel, allowing for a high ink capacity. Here's a video on how to do it!
  • Piston - A type of filling system that uses a retracting plunger inside a sealed tube to draw ink into a pen. They are typically either twist or push-operated. These pens cannot accept cartridges or a converter, and only fill from bottled ink.
  • Vacuum - A push-style piston that uses pressure to fill the large pen body with ink. They seal the ink chamber when closed, making it ideal for flying without risk of leaking. Check out our video on how to use a vac filler here.

Check out more info on these filling mechanisms including a video on how to fill each one on our blog.

How do I clean a fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the filling mechanism, but it mostly comes down to flushing it out with water, and sometimes a little bit of Pen Flush if the ink is really stuck. 

It's a bit easier to show than to tell, so we've put together a few quick videos showing you the process:

How often do I need to clean my fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We recommend a good cleaning every 2 weeks, and any time you change ink colors. 

Water will usually do the trick, but we recommend you use our Goulet Pen Flush if the ink has been left in the pen for a while and could have dried up, or when you’re switching ink colors.

My pen won’t write! What do I do? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

First things first... make sure you have ink in the pen! Be sure that the ink cartridge or converter is seated properly in the pen, and that you aren't out of ink.

We always recommend you give your pen a good cleaning first, using our Goulet Pen Flush, or a drop of dish soap in some water. New pens often have some machining oil residue left in the feed, so a good cleaning often does the trick first.

If that still doesn't work, try priming the feed. This consists of either dipping your pen nib and feed in ink, or forcing ink from the converter down into the feed. 

If it’s still not working after that, please reach out to us so we can help! 

What's your return policy? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

You can submit a return request within 30 days of your order date. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.

Please note we are unable to accept a return of any Namiki or Sailor Bespoke fountain pen for any reason once it has been used with ink. Please thoroughly inspect and dry test the pen before use.