Eyedropper Conversion Kit for Preppy Fountain Pens
With this simple supply kit, you can convert up to five Preppy fountain pens for use as "eyedropper pens." Because Preppy has an airtight barrel and is inexpensive enough to use for experimentation, it's a popular choice in the pen community for this type of conversion. In an eyedropper conversion, the pen is completely sealed to prevent leakage. Then, the barrel itself is filled up with ink, with no cartridges or converters needed. Eyedropper pens can hold much more ink than other pens, and with a transparent barrel, they can really showcase your favorite colors.
This kit includes two packets of our favorite synthetic grease (it's actually food-safe and very easy to use), plus five silicone O-rings sized to fit Preppy pens. Simple instructions are printed on the envelope.
Please note that converting your fountain pen for eyedropper filling may result in weird behavior, including ink blots, feed issues, and leaks. This is very much an "at-your-own-risk" modification, and neither we nor Platinum will be able to help if something goes wrong. That's why we recommend using this kit with our least expensive fountain pens.
Assembled in St. Louis from components of global origin.
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Looking for a bit more information about shopping at St. Louis Art Supply? We're glad you asked!
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Free U.S. Shipping Over $59
We're pleased to offer free shipping to any U.S. address (including Alaska and Hawai'i) for orders over $59.
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Shipped Quickly from St. Louis
Our efficient, centrally-located warehouse in Missouri ships orders within one business day. Unlike a lot of online retailers, we operate our own warehouse — we wouldn't trust your art supplies to anyone else.
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Real People, Here to Help
Any questions? Please reach out to our friendly customer service folks at [email protected]. We're art supply experts and we're happy to assist.
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Real Pictures
Almost all of our images are shot right here in our St. Louis studio. We never generate content or images with AI.
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Quality Pledge
We only stock materials we'd use in our own studios. Every product is tested in St. Louis and continually evaluated for quality and value. We're never afraid to discontinue an item that misses the mark.
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Trusted Since 2015
We've been in business since 2015 and we've shipped hundreds of thousands of orders. We use bank-level encryption to protect your data and excellent packaging to protect your supplies.
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Studio Supplies
Nichiban 2570 Flexible Artist Tape
FAQs
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How quickly will my order ship?
Our St. Louis warehouse team is pretty speedy! We generally ship orders within one business day of receiving them. You'll receive a tracking number by email as soon as your order's packed and out the door.
How long will it take to arrive?
We offer shipping estimates for each order at checkout. Please note that these are only our system's best guess — there are many factors that may affect shipping time.
Generally speaking, our parcels take about 2-3 business days to travel to most U.S. addresses once they are shipped.
In a hurry? We offer expedited shipping options, including overnight shipping, at checkout.
IMPORTANT NOTE: We never guarantee delivery dates because carrier delays are not within our control. We do not issue refunds due to delays in transit.
Do you accept returns?
Yes — we accept returns of unopened, undamaged items within 30 days of receipt.
If your return is because we made a mistake, we'll pay for the return shipping label. If you're returning an item because you changed your mind, return shipping is at your expense.
Read our full return policy here.
Is there a physical store?
Yes, there is! We'd love to see you at our St. Louis retail store. We're in the Grove neighborhood, near lots of fun places to eat, drink, and shop.
Do you offer wholesale or bulk discounts?
We do! Educational and institutional customers can email [email protected] to place a discounted bulk order. Send us a screenshot of your Blick or Amazon cart and we'll do our best to match it. You can always finish checking out with the big guys if we don't have a great bid for you.
If you're buying for a retail store, we'd love to meet you! Please head over to our wholesale division, Federal Color. You'll find our wholesale catalog and application there.