My problem was a little different. I have had my Jot Pro less than a week and went to retrieve it from my iPad carrying case. The disc is gone. It must have fallen off the pen. I am disappointed that the disc so easily comes off the stylus. I barely had a chance to even use the Jot Pro and now I can't. I  contacted Adonit through the Help email address listed above, but got an automated response that I was contacting them outside of business hours. But it's NOT outside of business hours. :-(

Glad to see I'm not the only one having issues with the discs.  $7 for each disc replacement seems pretty steep.

Hey guys, thanks for clarifying that the replacements  are free.

Jon, I'd like to suggest putting a more detailed answer to this question up at the top. Right now it just says that replacements are "available for a small fee", and since you're now selling the replacements in your store, it's easy to get the idea that we're not going to get them for free. I think your reply to my previous post is the first one here that says that there was a manufacturing defect, and that the replacements were free. Without this information spelled out, a lot of customers (like me) will get the impression that we're going to be charged for the replacements.

Like Allen I want to clarify that my replacement discs (2) were FREE.  And, the new discs are much better quality.  

The new discs "seem" to be a little less sensitive than the original on my iPad.  But, it's certainly not a deal breaker for me and I find the accuracy to be unaffected.  I still find my Jot to be the best stylus I've used and worth the "trouble" I went through to get the replacement discs.

I understand Adonit has hired more support staff and gotten caught up on dealing with issues.  Given the current quality of the product I have in my hand and the improved customer support, I'd say they've redeemed themselves in my case and I recommend them without reservation.

I would like to add to my previous comment, that my replacement discs were FREE (just in case it wasn't clear, Winston), and that they have none of the problems that the original disc on my Jot Pro had.   (my regular Jot didn't have the problem, but i replaced the disc anyway, since Adonit kindly sent 2 replacements :)  !

Replacements are $8 with $6 shipping. You have to be kidding!

When I bought my Jot, this website suggested that it would be really difficult to break the disc -- after all, they seemed genuinely curious about how it could happen and wanted us to email them to tell them how! (At the time they weren't selling replacements for $14.) Well, yesterday, my Jot rolled off a table onto a carpeted floor, and the disc split in half.

I spent $26 to get the Jot in the first place, and now I have to spend another $14 to fix it after it rolled off a table? If Adonit had been up front about (A) how easy it would be to break it, and (B) how much they would charge for a replacement, I doubt I would have bought one.

One of the major reasons people have good will toward a company like Apple is because, even though the prices may be higher, they know the company stands behind their products. I thought that's what I was getting from Adonit. But here's the experience I and many others have had. First, the website was kind of misleading about the durability of the Jot. This itself isn't the worst thing in the world, if the company was willing to stand behind their product. Instead, we're left feeling like suckers -- $8 for the discs and $6 for shipping them? We all know it doesn't cost remotely close to that much to make and ship them. Having your products break is apparently a profit-making enterprise.

Adonit: anyone who's experienced this might buy stuff from you again, but they'll have to hold their noses while they do it.

Here it is, October 18th, so I wanted to give an update and say thanks:

I received the replacement discs about two weeks after my post on September 2nd. My wife and I have been using the Jot Pro heavily with the iPad 2, and it's received it's share of drops, dings, and kicks. The replacement discs are of MUCH better quality than the original.

We have noticed that the accuracy seems slightly degraded. My wife and I can't tell whether this is an issue with iOS 5, the capacitive touch of the iPad 2, or the manufacture of the Jot Pro disc. Sometimes, and sometimes/often, we have to click, touch, or depress hard on the Jot Pro in order for it to "make contact" and to be useful.

All capacitive touch screens have issues in varying temperatures and depending on whether or not you are wearing gloves. With the colder mornings, even using an iPhone 4 while waiting at a cold Metro station for the next train, the iPhone 4 will occasionally not recognize a finger touch.

On the whole, we're impressed with the Jot Pro.  The new discs are a significant improvement.  The design of the Jot Pro is a solid and useful stylus.  We wish that we could use it with our HP Slate and other NTrig/Wacom devices.  Any chance of making a digitizer pen with equal quality? =)

For the sake of others having the same problem, I would like to give an update on my status.  Adonit did ship me 2 replacement disks.  They both seem to be of better quality than the one originally on my Jot.  All in all, I think it took about 2 weeks from my first email to them with the problem until I received the replacement disks.

I am very happy with the Jot and find it to be the best stylus I have used.

I still believe, however, that customer service could have been much more responsive.  The rep who dealt with me via email did say they were hiring more customer service reps to increase their response time.  I do hope that occurs because it's a shame to see a company with a product this useful suffer from such poor customer service.

I would like to add that i also had problems with my disc splitting.   in my case, I purchased both a Jot Pro directly from Adonit (after the kickstarter), and a regular Jot from ExecSpot in the UK.

When they both arrived, the discs were identical (both completely flat). I really don't use the Jot, because i prefer the Jot Pro, but after about a week of use, the Jot Pro disc developed a bulge.

about a day later, i noticed that the Jot pro was not as responsive (skipping lines in Autodesk Sketchbook, mostly. the regular Jot still worked fine.

about a day after that, i noticed that the disc on the Jot Pro looked like it was spliting in half! the bottom half was hanging on by a thread! upon closer inspection, the bottom fell off, and the little metal plus sign fell off as well. i was able to put it all back together, but the Jot Pro has lost almost all sensitivity.

The regular Jot still works fine, and still has a completely flat surface.   

I emailed support and created a ticket on this site (within minutes of each other).   i received a prompt reply.   A very helpful person explained the cause of the problem to me, and then asked that i confirm my physical address and phone number, and they would be happy to send a replacement disc.   i replied a couple of days later with the info requested (i'm a busy person), and got an almost immediate reply.   the next day i got a confirmation from Amazon that i would be receiving 2 replacement discs.   why Amazon, i am not sure since like i said above, i didn't order through amazon, but i'm not complaining because i order like 10 things a week from them, and never have any problems.

TL;DR version, give Adonit a chance!   they are definitely trying, and this is the best stylus you can buy!  (i also one of the new DAGi's, and it ended up having a problem exactly like the Jot Pro, got no love from them as far as a fix, only a refund).

Can adonit please just post a page in which you can purchase a new disk? Why do they make you email them, and why don't they say how much a replacement disk costs?? 

It took 3 emails from me to support to finally get a response.  It may have helped that I said I would dispute the charge on my credit card if I didn't hear back from them within 24 hours on the 3rd email.  They did respond to that email within hours and said they are sending me a replacement.  Of course, it remains to be seen how long that will take but they said it would be shipped by the end of this week.

This is the worst support I've experienced in years.

But, I did want to post this update and encourage those of you still having problems getting a response to stay with it.

Has anybody actually heard back from the company on this issue?  I emailed help about 4 days ago and never got a response.  

Mine lasted about an hour of use, straight out of the box. It just slipped off and the silver star is no where to be found.

Emailed help@ over 5 days ago politely and patiently asking for a replacement. Still no reply. I feel as if my money has been stolen right out of my pocket.

Extremely disappointed by this company. Worst customer service experience I've had in the last 5 years of purchasing gadgets/gear etc. Talk about crappy product quality.

Ordering a product that was developed via Kickstarter was always going to be risky, but I'm always championing the innovative little guys. 

In this case, I simply cannot recommend Adonit's products to anyone and would not be surprised if they went out of business. 

I received Jot Pro and was using it for a while. Liked the feature of magnetic attachment to the margin of my iPad. But when I grabbed the iPad for a meeting the Jot Pro fell off and hit the floor and broke the plastic disc. I contacted Adonit about this situation and have not heard a thing from them. Apparently this is a known problem. I think a couple additional discs should have been supplied with Jot Pro for this very reason.
When I read about Jot Pro, everything sounded great, but I did wonder how long the plastic disc would hold up. In my case half an hour.

I hope the hear from Adonit soon with discs in the mail.

My disc split apart while testing the pen within 10-15 minutes of opening the package.  I submitted a help ticket wanting to know whether to return it for replacement or whether they'll just send another disc.  

How long does it take someone to actually get back to you?

My disc split after it rolled off my desk onto a carpeted floor! I have yet to figure out how to get it to restick, it keeps separating. 

I bought two of the blue JotPro pens. The pens themselves are awesome but the discs are cheap plastic. Why compromise quality on the disc? It really ruins the whole experience when it falls apart the week you have it.

This has also happened to me

Sadly, it only took me a week to split my disc in half. I've been using the Jot Pro heavily for the past week, keeping it magnetized to the margin of my iPad 2 when I'm not using it. When I accidentally knocked my desk this morning, it rolled off my iPad and onto the floor, landing on it's disc. It split the disc in two halves, where the top half was still attached to the Jot while the bottom half (with the crosshairs) was lying on the floor.

I was able to reattach the two halves, but it feels loose and it already split once while writing on my iPad. I was hoping to get a replacement disc or two to fix this and be prepared if it happens again. I emailed help@adonit.net and got the automated reply about Ticket #89: Very happy with the Jot Pro, but have a "split disc"

Hopefully I'll be able to get a replacement disc soon. I love my Jot Pro and look forward to using it for years to come. The construction quality, heft, and inking with the Jot Pro feel great. I think the only thing I'd change if I could is the disc construction. Would it be possible to make it from a single mold rather than two halves? Aside from that, I could see needing spare nibs/discs for times like these.