TWSBI Fountain Pen Nib & Line Comparison

In this video, I'll show you the line width differences between the TWSBI #4, 5 and 6 nibs in all nib sizes from EF to 1.1mm Stub. Comparing with a COPIC Multiliner allows us to roughly approximate the line widths in millimeters for all the different nibs and we hope this video helps you choose which nib size will be the perfect one for your handwriting!
Timestamps:
0:15 Intro to TWSBI #4, #5, #6 Nibs
1:25 TWSBI #4 Nib
1:39 TWSBI ECO Extra Fine Nib
4:50 TWSBI ECO Fine Nib
7:25 TWSBI ECO Medium Nib
9:37 TWSBI ECO Broad Nib
12:13 TWSBI ECO Stub 1.1 Nib
14:33 TWSBI ECO All Nib Sizes
16:13 TWSBI #5 Nib
16:27 TWSBI Diamond 580 Extra Fine Nib
19:05 TWSBI Diamond 580 Fine Nib
21:29 TWSBI Diamond 580 Medium Nib
24:08 TWSBI Diamond 580 Broad Nib
26:30 TWSBI Diamond 580 Stub 1.1 Nib
29:09 TWSBI #6 Nib
29:42 TWSBI Vac 700R Extra Fine Nib
32:08 TWSBI Vac 700R Fine Nib
33:53 TWSBI Vac 700R Medium Nib
35:33 TWSBI Vac 700R Broad Nib
37:31 TWSBI Vac 700R Stub 1.1 Nib
39:34 TWSBI Vac 700R All Nib Sizes
41:04 TWSBI Stub 1.1 Nib Comparison
43:16 TWSBI Full Line Comparison
45:42 Thanks for watching!
TWSBI Fountain Pens:
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[@MartinHsueh]

Thanks for taking this huge effort to show us how each nib size writes! It is so informative and useful! Love this video!

[@ladyamalthea85]

I love that I've found a new hobby full of passionate people. I'm particularly interested in using a fountain pen to replace my fineliners when sketching for watercolour painting.

[@JonTheJotter]

This video is amazing. Makes it so much easier to see the differences for a beginner like me.

[@migenteyoga7136]

I'm doing it: I'm ready to get my first fountain pen. Thank you, guys!

[@pointeplusplus]

Great video! I love the level of detail you went into here One suggestion: if you had your line thinknesses on a transparency, you could use that to overlay over the pen lines to see what is the thinnest pre-measured line that would fully cover the pen line. It could standardize the control lines and reduce ambiguity as to which line it matches best (I’d recommended using a different color on the transparency and on the page)

[@principeturandot4593]

This video is EXCELLENT! My god. This is how you demonstrate nibs thoroughly. Every possible question I had about the TWSBI nibs has been addressed here. You all are so wonderful with your videos. Thank you so much. From start to finish it was an absolute pleasure to watch.

[@garrjammm]

Thanks for the video! I've been looking for a comparison of TWSBI nibs. I recently got a Vac Mini EF. After a very small learning curve I'm in love! With a more vertical writing posture I can get an ef line that rivals my pilot kakuno, but with a more relaxed posture and a bit of pressure I can get a line nearly as broad as my Lamy Safari with a B nib. This versatility is making it so perfect for my journaling as I enjoy switching between super small cursive and loose doodling pretty frequently. Great pen!

[@barbarajloriordan2697]

Wow, that sounds like a great pen!

[@synago_scribe]

Thanks for this video! My first Twsbi Eco-T is an EF nib. I ordered an (F) based on your video to write my main notes in black, then I go back and make follow-up notes and misc in the (EF) in a different color. Kinda neat, I appreciate your video; It helped.

[@ladyj9386]

Thanks so much for the video. I love all of the nib comparison videos you have done - super helpful!

[@kellylopez6587]

Thank you for all of your video's, I love writing with broad and medium nib's. I love all of my TWSBI fountain pens, but i'm so in love with my Polit Vanishing point in the broad nib. I never leave home without it. Keep your video's coming. Thank You Kelly

[@mybibliofiles]

What a wonderful resource! I wish this had been around when I was choosing my TWSBI. I'll have to go for the EF next time. 🤗

[@grimmrainbow5008]

Thanks for doing this! I was hoping you'd do TWSBI and my prayers have been answered. Supper helpful. I've been debating between getting EF and F for the longest time.

[@barbarajloriordan2697]

have you come to your decision? I just decided on a fine Eco-T, and this review helped me to come to that.

[@grimmrainbow5008]

@@barbarajloriordan2697 I might go with the EF Eco in smoke/rose gold. Now I just need to save up for one!

[@Faithandfountainpens]

Thank you so much! I am new to fountain pens and gravitated toward Twsbi 😊 in F and EF and am enjoying both however am preferring the F the best. Love this! Thank you again 🙏🫶

[@Tomasor3]

Why do like more about the fine? Im between ef or f... 😅

[@viarnay]

twsbi is on my sight, thank's for taking your time to explain the nib sizes.

[@Yoseka]

Thank you for watching!!

[@barbarajloriordan2697]

I love this video, as it provides me visually with all the information that I need to make a decision. I would love to see more videos of this type for other brands of pen. Would you also be willing to think about making comparison videos between or among brands? I would love to see videos comparing/contrasting, say, a medium nib across brands, including Lamy, Pilot, and TWSBI.

[@Yoseka]

Thanks for watching Barbara! Thrilled you found this video to be helpful. We'll try to make more like it :)

[@barbarajloriordan2697]

@@Yoseka wow! Thanks.

[@Bri_paints]

Such a helpful video, thank you! I’m getting a TWSBI eco for writing and drawing because I’m an artist who goes through too many pens! This video helped me decide on the nibs I wanted to buy. Thank you so much!

[@elizabethheyenga9277]

Super helpful. I was between EF and F and this confirmed EF for my purposes.

[@stacya3751]

This video comparing the different nibs is very helpful. I can't wait to get my first TWSBI!!!!

[@Yoseka]

Thanks for watching Lorna! So happy this video was helpful for you!!

[@hamana2011]

One of the best channels for nib comparisons great reference 👏

[@say9704]

'I don't remember letters today' when you review pen nibs, I love that review :D, jokes aside i got all information i needed with comedy twist; 10 out of 10.

[@9Lumberjack6]

Perfect, thx for the video! I bought a TWSBI Eco with a fine nib and I'm a bit disappointed. This nib is thicker than the nib from my Pelikan M200. So I can see the extra fine is the one I have searched for. :)

[@eliza8872]

Thank you for doing the line comparison, this is what I've been needing.

[@arguchik]

This video is so helpful! Thank you for doing such a detailed comparison of the TWSBI nibs. I know I'm commenting almost 2 years *after* you posted this video, but I had a thought as I was watching: do you think that TWSBI would ever do a collaboration with Yoseka, to create an Eco with Yoseka green accents? That would be so cool. :)

[@sleepawkeen]

Thank you so very much! This is a great help, especially your comments about using shimmer inks. Thank you!

[@scottnorvell2955]

This was awesome! Thank you so much. I used it to order my new 580.

[@eggscuseme]

this is such a great comparison video, very helpful. thank you for the walkthrought!

[@kevinu.k.7042]

TWSBI use both Bock and Yowo nibs. It is a myth that all European nibs are always broader than Asian nibs. Even with Japanese nibs there is quite a difference between one manufacturers fine and that of another. I do wish manufacturers would quite line widths, but they can't as there is quite a bit of variation between nibs of the same manufacturer because of manufacturing tolerances. None of this detracts from your video which is great. Thanks.

[@graciepotato7467]

this really help me to decide! Thank you so much

[@chadrickm]

Just ordered my Eco w/ a F nib. I was worried that the EF would be to small or the F would be too think. It looked like the the F actually flowed well and wasn't too thick. I think I'm good and your video was awesome! Will see next week when it shows up if the choice was a good one ;)

[@andrei-n7]

Thank you for this video. This is exactly what I was looking for.

[@eatmelily]

I recently received my First TWSBI a Vac 700R, in EF....I'm really not a fan of EF, I much more prefer a M...However, a pushed to "add to cart" put the EF in there, and I couldn't change it. I still Like the pen, but it is indeed a Very Fine nib......I Look forward, to ordering another with a Medium....Thank you for the Video....

[@bobodeng1784]

You can buy additional nibs unit for the vac 700r for a lot cheaper. That way, you can just change the nib unit to the one you prefer without spending extra.

[@ostensibly531]

​@bobodeng1784 this is a great tip! I was stressing about the nib size.

[@meaninc123]

Thanks for this video! I have a TWSBI Go stub and an Eco stub, and while I like them there's not enough line variation. I will get the 580. I'm no calligrapher but I love journaling with stubs because they give my handwriting so much expression.

[@Yoseka]

Thanks for watching and commenting Tiffany! The Diamond 580 stub nib is definitely more dramatic than the Eco and Go :)

[@heathergleiser]

Cheers for this, Daisy! I love my broad nib Eco, it plays well with all the shimmer inks I love and I’ve wondered if I’d like a stub nib on one. I think the answer is a YES!

[@Yoseka]

Thank you so much Heather! Glad you enjoyed the video and thank you for the feedback! Stub nib sounds fun :)

[@blanejnasveschuk6351]

Nice comparison video for TWSBI. Very helpful. TY

[@ferhataltun6524]

Thank you so much. It helps a lot. I m sure which I get now 😊

[@Chris-gp2ft]

thank you so much for your review. I wasn't sure of what nib size I would take. Now I am.

[@cferracini]

Thanks for this! I understand what you mean when you say the TWSBI is consistent but, to me, if between lines from the same brand the same size nibs write different from each other, that's not consistent. Maybe Pilot and Platinum spoiled me by being so consistent between all their fountain pens (or at least the ones I tried), but it's what I expect from a consistent brand. I was told their gold nibs are a different story but it's a different material so I don't think it's fair to compare with the steel nibs.

[@lilit3307]

Thank you for this in depth comparison. I'm surprised with the specific ways those nibs are different, very interesting to see them all laid out. But why is no one talking about your interesting capital Gs?! It's like, almost an h, but not quite? Lol

[@Yoseka]

Hahah does no one else write their g's like that? Oh boy

[@lilit3307]

@@Yoseka I did see in another one of your videos where you were writing capital letters again, and connected the g more, and then I understood it hahaha Idk why I couldn't see it just being basically a big lower case g in this one 😅

[@marka5968]

I own 3 TWSBI EFs. All write completely different line widths. Though with EF, there is a higher chance of getting a dry nasty nib.

[@m.muzinski7842]

I have similar on EF from Lamy! 3 totally different lines.

[@perkristoffersson4153]

Just ordered an ECO with an F nib and, after going back and forth a lot, a 580 with an M nib. Hope I'll like both for different uses.

[@norbshay8088]

What ink are you using here?

[@siddharthadas1040]

Very nice video! Thanks. Do you have one for pilot fountain pens like this one?

[@Yoseka]

Yup! We've done line comparisons and nib logs on Pilot Custom 74, Pilot Metropolitan, and Pilot Falcon

[@siddharthadas1040]

@@Yoseka could you share the link please? Would also be glad to know your thoughts on swapping a TWSBI Go EF nib into TWSBI Eco (which currently has a F nib).

[@pvrspvrs4781]

After "f" comes "g", isn 't it?

[@hamana2011]

Love your reviews Thanks i have many B nibs can never see the thickness of your sample 😯 what paper ink combo are you using ?

[@ks22187]

I am not Daisy, but I saw she said she was using Sailor black ink. I find that ink to be a bit “wetter” than other Sailor inks, which might contribute to the “broadness” of the broad line in this example.

[@congomac2001]

Super helpful video. Thank you!!!

[@moes_film]

excellent video. thank you!

[@queenbuzybee4074]

Thanks for this. I was uncertain about which size nib to order, looks like F would suit me well, whereas I otherwise go for M. Did you tune the nibs at all beforehand or are they „out of the box“?

[@Yoseka]

Too lazy to tune 😅 These are straight out of the box!

[@TheDormousesDesk]

I so excited to get mine!

[@foreverqihe]

Wow, thanks for your efforts! This review is really helpful. Which ink are you using?

[@Yoseka]

The ink in this video is Sailor Black :)

[@foreverqihe]

@@Yoseka Thank you 🙏

[@tinacampbell2610]

Thanks so much for doing this comparison. I have been collecting TWSBI pens (I love them) and this guide helps so much growing my collection. I has also helped me with trying out new nib sizes and helping me to determine what inks to use with each nib... Great job! It also helped me purchase a new nib size I would have never tried in my 700R Iris (fine) and now I have to change my Stub nibs to fine or extra fine...

[@Yoseka]

Hi Tina! Thank you for watching and so glad you found this video helpful!

[@lindaprowse3528]

How do the stub nibs work for someone who is left-handed?

[@pbehera15]

Thanks a lot for the comprehensive video. I wanted to know if the Broad nib on the 580 had some skipping/hard start issues. I intend to purchase a 580 and I like nibs that lay down wet lines but would like to avoid a nib that can have skipping issues. Thanks again.

[@Yoseka]

Hi there! Never had any issues with skipping issues with TWBIs actually!

[@martinshephard6317]

Great video but sadly I’ve now got to buy three pens! One question, as I draw in ink and use a watercolour wash, how do Twisbi handle waterproof inks and is there one you’d recommend that will flow properly?

[@melissaadp]

I bought my first ever twsbi eco using this video as a reference, i need it for urban sketch with watercolor and i usually will go with fineliner in 0.4 or 0.5 and up for sketching , so i decide to buy the F nib one, hopefully when it arrives it will be a perfect match for me, funnily enough in lamy i’d go for M nibs, well i dunno tho, some ppl said the F nibs in twsbi eco same with M nibs in lamy safari~ so hopefully it is correct

[@ramentasty8]

I want to get into urban sketching with watercolor with my fountain pens as well. What ink do u use? I’m assuming it needs to be waterproof?

[@Euonym.]

Thanks! This was helpful.

[@luigig6256]

Is the 580 a 1.5 stub ( it looks exactly like my 1.5)?

[@Ali4451_]

This is an excellent video

[@CG-bk4yd]

I come from using a Lamy size M, do you think it will be too thick to get the stub nib? I write big, and hate fine nibs, but I saw a stub nib, M, and B from the ECO line and I'm leaning towards the stub but I'm not sure if it would be too thick. I want to use it for journaling etc

[@bobodeng1784]

Is the paper you use in the video just normal photocopy paper?

[@eastraversupplies7843]

Thanks! It was helpful

[@richardsimms251]

Excellent explanation. RS.

[@dancook5006]

Great video! What is that plastic thing you use for drawing your lines?

[@Yoseka]

Thanks! Any straight edge will do but in this video I was using a plastic sheet that came with the Hightide nahe A6 case I use!

[@Chris-gp2ft]

This comparison would interest me on a standard lined paper oder with karos. Thanks

[@thomasfilz2228]

The nibs were produced by Bock in Germany and are now manufactured by the German brand JoWo, that’s why they are so precise and reliable

[@sathishstpr]

Wat ink did u use ? The brand n specific name?

[@LisaPottinger]

Thank you for a really helpful review but what about the Twsbi Classic and Precision. You missed them off the review! I don’t think they get enough love from the fountain community. I have a Classic and the nib is softer, and in my opinion, a nicer writer than my Eco or Diamond 580.

[@Yoseka]

Thanks Lisa! We've had a couple of other comments about these! Sorry we didn't include them but good to know that you love them so much!

[@DanGleebowls]

Are the Nib sizes comparable to Lamy Safari sizes? I have a safari in Medium and am looking for something finer for linework on Watercolour sketches

[@Yoseka]

Haven't ever done a side by side comparison but yes, believe they would be pretty similar to LAMY sizing

[@altijdvliegen]

I Have several twsbi's. Apparently there is a difference between Twsbi nibs?? My 580 M gives a line of 0,5 mm. My 580 F a line of 0,4 mm. They're not knew - they're my daily writers. Confusing.

[@mattartiste7214]

Hello Yoseka, congratulations for all your tests, I need a little help I am looking for a fountain pen to draw with a regular line that glides well medium and resistant tips with a regular flow and very dense ink do you have a model for me advise

[@Yoseka]

TWSBI Fine or Medium would probably be great!

[@LenaMellow]

Do you sell TSBI #4 nibs?

[@run-a-milekyle3835]

Been looking at 580alr’s, the bold B nib looks great but might be too much for my writing size.

[@Yoseka]

Perhaps the M nib would be better for you!

[@Harudath]

Would love to know which ink you were using in this video. You've sold me on a twsbi! :

[@Yoseka]

Believe all these pens were simply inked up with Sailor Black ink :)

[@Harudath]

@@Yoseka Thank you!

[@nirvanalin3227]

I have a question: a fountain pen shop owner told me that TWSBI Diamond 580 EF is smoother than F nib. Is this statement true? Thank you!

[@nirvanalin3227]

I have TWSBI Eco-T F nib and it is quite scratchy though the ink flows consistently. That's why I wonder about what the shop owner told me about how smooth 580 EF nib is, and it is smoother that 580 F nib.

[@malcolmtaylor518]

Twsbi EF nib great for sketching.

[@wdstauter8429]

Very helpful

[@OtakBolong]

is TWSBI #4 nib comparable with Pilot F?

[@Yoseka]

TWSBI EF is thicker than Pilot F generally speaking

[@papsaebus8606]

Hey! what paper are you using here?

[@Miastrong930]

Excellent review comparison of the nibs in the TWSBI nibs. My favorites are the 580 stub and the eco can't decide between the fine and extra fine. I use my pens to do line work in my art. I have a question about inks: I have a white hand made ink made by DeAtramentis. It is called Document Ink White and needs to be skaken before use. Can this ink be used in the TWSBI pens?

[@Emma__Smith]

F in the chat for my man letter "G" lol

[@pennfootball71]

my older TWSBI stuff from 8-9 years ago were about .1mm finer per nib size. weird

[@bbronzatissimo]

gracias, genia!

[@vindog4047]

The amount of times that the letter G was missed or written as something completely different from a G really messed with my ocd!

[@Yoseka]

lol omg so sorry

[@XtianApi]

Thank you for the time. Fineliners are notoriously terribly rated. Some rate the line, some rate the nibs, etc. Also you'd want to hold them vertically, not at an angle. The technical pens are better for this, but quite expensive

[@PandorasCrate0]

the fine nib on my Precision is scratchy af :

[@TheDormousesDesk]

What ink are you using?

[@Yoseka]

We are using Sailor Black ink in this video!

[@ja-no6fx]

your less than and greater than signs are backwards, think of the arrow as an alligator, the alligator always wants to eat the bigger number. So if u have x > y , the alligator wants to eat the x, therefore the sign means greater than; X (greather than) > Y. if you have X < Y , the alligator wants to eat the Y, because its bigger. so it would be X (less than) < Y. Also, you forgot the G in your cursive alphabet. Other then that, Thanks!

[@StopFear]

TWSBI fine is not fine enough! Extra fine is not extra enough!

[@Yoseka]

Hahah true. TWSBI is not a true EF if you are a true EF lover and write with 0.25 or 0.3 pens!

[@tanyapunyo2074]

Should have bought extra fine, fine is also broad for us asians

[@MikeG-js1jt]

Yes, my Twsbi F is about the way most folks would consider halfway between a fine and medium..... they are definitely somewhat bolder than a typical Asian nib

[@MissMarilynDarling]

Cough Cough