Remove nib from Rotring 600 Knurled

[penguinmaster]

I have a Silver Rotring 600 Knurled FP that I recently bought a medium nib for it. I'd like to replace the Oblique Broad that came with it to the medium. Anyone know how to get the nib off? I tried pulling it off, to no avail though.

[penguinmaster]

Nevermind I figured it out. For those of you that want to know how i did it and are ready to cringe! Very Very cushiony latex sheet or rubber, needlenose pliers and a very firm but gentle tug will pull it right out no problems. Take on this at your own risk! The rotring lives up to it's name though, came out without a scratch!

[rroossinck]

I know the feeling. Freaks you out, doesn't it?

[Jarno]

Well, at least the barrel isn't made of 60 year old celluloid or something, it is a very sturdy pen. I'm hoping to add one to the collection in the near future (if SWMBO isn't looking, she caught the "congratulations" screen of Ohboy when I won a Tibaldi FP, no FP purchases for me the next couple of months ;-) ).

 

Regards,

 

Jarno.

 

[burnki]

I love my old 600! It's a great, tough pen, and it's just heavy enough to help one ward off muggers, or unwelcome bosses who might stop by your cube for a visit.

 

Seriously, I've had 2 in near constant rotation for a long time now and my only complaint is that the o-ring at the end of the barrel (that keeps the cap posted) broke. Anyone able to guess on the size of a replacement o-ring?

[penguinmaster]

I love my old 600! It's a great, tough pen, and it's just heavy enough to help one ward off muggers, or unwelcome bosses who might stop by your cube for a visit.

 

Seriously, I've had 2 in near constant rotation for a long time now and my only complaint is that the o-ring at the end of the barrel (that keeps the cap posted) broke. Anyone able to guess on the size of a replacement o-ring?

 

I love my 600s too. I've heard about the o-ring problem and no one seems to know what size replacement there is. I have an e-mail into the Janesville repair department (and lucky for me I live in Janesville) to see if maybe I can purchase a package of them. If that is the case i'd be happy to send some out to people that need them. I'll keep the board updated.

[Jarno]

O-ring size.

 

If you have the broken o-ring, you can measure the diameter of the crossection. If you know where it "sits" on the barrel when you post, you can measure the main diameter. Plain o-rings are very cheap, buy a couple in different diameters and try them out (and of course post the result here). Don't be tempted to buy the higher grade o-rings, as these are more slippery. Also, I think silicone rings aren't stiff enough to stay put.

I might try to see if they have some in the modelshop at work, if you let me know the main- and crossectional diameter.

 

Best regards,

 

Jarno.

 

 

[jsonewald]

I've also been frustrated by the O rings. My last substitute was a couple of elastic bands from my daughter's braces. They didn't work too well.

[penguinmaster]

I do know the problem with the o-rings was that it seemed as though standard ones did not fit. I just received an e-mail back from Sanford telling me they are out of stock and will not be getting any more o-rings. I'm amazed at this place, how can they not support a product they sell!! I'd measure the diameters you want but, I fear taking off the o-ring from a good 600 would possibly damage it and then I'd be screwed.

[Jarno]

And if it is the ring on the end, near the nib, that's not an o-ring. It's wide and flat, and o-rings always always have a circular crosssection.

I am trying to think of a technical application which uses rings like this, but I can't think of anything.

Turning it on a lathe is not going to be a resounding success, the rubber being soft and all. Maybe you can use a couple of o-rings next to each other.

Not breaking the rubber ring seems the best way.

 

Regards,

 

Jarno.

 

[jmkeuning]

I slid the ring off of my 600. It looks like a regular o-ring to me.

[Jarno]

Where is it in this picture?

 

Should there be one on the end of the knurling, near the nib?

 

Best regards,

 

Jarno.

[jmkeuning]

other end.

 

on the end of the barrel where you post the cap

[Jarno]

I found a picture showing this end, and yes, that certainly looks like a regular o-ring.

You shouldn't have a problem finding one of those, if they carry them in metric dimensions in the US.

But even when they don't, you should be able to find one that fits (if it stretches a bit, it'll stay put all the better)

 

Regards,

 

Jarno.

 

[*david*]

Nevermind I figured it out. For those of you that want to know how i did it and are ready to cringe! Very Very cushiony latex sheet or rubber, needlenose pliers and a very firm but gentle tug will pull it right out no problems. Take on this at your own risk! The rotring lives up to it's name though, came out without a scratch!

How did it go when you put the new one in? Any problems?

[penguinmaster]

I haven't' done it yet. I am still awaiting the pen to come in that i'm transplanting the medium nib from.