Introduction At Stadium Pen Blanks, we’re passionate about providing authentic historic and stadium relics that inspire talented artisans and pen makers to create exceptional work. Every blank we sell comes with a certificate of authenticity that guarantees its origin and legitimacy. Behind the scenes, we’ve always made deliberate choices about how we handle certifications to best support the artisans who rely on our materials. Today, we want to share the reasoning behind our past approach, a recent update we’ve made, and an exciting development that’s coming very soon. The Original Certification Approach When we began selling certified historic and stadium relics directly from our website, the certificates did not reference Stadium Pen Blanks. Instead, they listed Hardin Penworks as the certifier. This was an intentional decision designed to protect our artisan customers. We wanted to prevent their end buyers from easily discovering the source and original cost of the raw materials. For instance, seeing that a historic stadium seat relic (such as from Yankee Stadium) started as a $20 piece of wood before being transformed into a finished pen selling for $400 could create the wrong impression. Some customers may not fully appreciate the significant investment in time, skill, and experience required to turn a modest piece of historic wood into a high-value, handcrafted pen. By certifying under Hardin Penworks, we helped keep the spotlight on the artisan’s craftsmanship and the unique story of each finished piece, rather than on the raw material cost. A Recent Change: Moving to Hardin Collectibles Recently, we updated our certification process by changing the certifying name from Hardin Penworks to Hardin Collectibles. This change was a huge undertaking. We had to replace over 20,000 certificates across more than 500 different items. We view this significant cost as a meaningful investment in our customer base — you, the artisan! The goal was simple: to remove any potential confusion between our own Hardin Penworks pen-making business and the independent businesses of the artisans who purchase from us. We want each artisan’s brand and work to stand clearly on its own, without any overlap that might cause misunderstanding. This change creates cleaner boundaries and lets your creativity and expertise take center stage. What’s Coming Next: A Dedicated Hardin Collectibles Website We’re excited to announce that very soon we will launch a brand-new website dedicated solely to Hardin Collectibles. This new site will serve as a detailed resource for our artisans and customers. It will list all of our materials with much greater depth and transparency—providing richer descriptions, additional background on the history and sourcing of each relic, and more comprehensive information to help you make informed decisions and tell even better stories with your finished work. The dedicated Hardin Collectibles site will complement Stadium Pen Blanks perfectly, giving you a centralized place to explore our full inventory in greater detail while keeping the certification process clean and professional. Our Commitment to You These changes reflect our ongoing dedication to supporting the artisan community. We want to provide authentic, well-documented materials while protecting the value and integrity of the beautiful pieces you create. Whether you’re a seasoned pen maker or just beginning to explore working with historic wood, we’re here to help you succeed. The upcoming Hardin Collectibles website is another step in making that support even stronger. If you have any questions about our relics, current certifications, or the new site when it launches, please feel free to reach out. We love hearing from our customers and talking about the incredible transformations that happen when historic materials meet skilled hands. Thank you for being part of the Stadium Pen Blanks family. We look forward to continuing to serve you with quality relics and even better resources in the months ahead. — Michael HardinFounder, Stadium Pen Blanks (and Hardin Collectibles)

Frequently Asked Questions: Turning Plastic Stadium Seat Pen Blanks Welcome to the FAQ for our plastic seat blanks at StadiumPenBlanks.com! These blanks are crafted from high-density polyethylene (HDPE) recycled from real stadium seats and infused with our JB Royal Original Epoxy Resin. They offer a durable, eco-friendly material full of character, but HDPE turns differently than wood, acrylic, or resin — it's softer, more heat-sensitive, and rewards sharp tools with light cuts. Below you'll find expert tips based on real turning experience. Updated June 2026 Table of Contents 1. Material & Turning Characteristics 2. Recommended Tools & Setup 3. Best Lathe Speeds 4. Avoiding Common Issues 5. Sanding, Sealing & Polishing 6. Drilling for Pen Kits 7. Safety Precautions 8. Troubleshooting & Pro Tips 1. What material are the plastic seat blanks made from? Our v1 and v2 blanks are made from recycled HDPE stadium seat material mixed with JB Royal Original Epoxy Resin. HDPE is softer than acrylic but more resilient than wood, making it forgiving yet capable of a beautiful glossy finish. Because of the two different densities (seat plastic + resin), the blanks can be a bit more delicate — always use sharp tools and light cuts to avoid melting. Heinz Field seat material turned by Karl Henschel 2. What tools and setup do I need? Lathe: Mini or full-size wood lathe — stable setup to reduce vibration. Turning tools: Sharp carbide or HSS tools with polished edges (dull tools cause melting). Bushings & Mandrel: Proper pen kit bushings for perfect alignment (Turn Between Centers works great too). Finishing supplies: Norton SandWet paper (220–2000 grit), thin/medium CA glue, Magic Juice polishing compound, and a soft microfiber cloth. Square the blank ends carefully with light pressure on a disc sander before mounting. 3. What lathe speed should I use? Run at the highest comfortable speed — typically 2,000–3,000 RPM for mini lathes. Start around 1,000 RPM for roughing and increase for finishing cuts. High speed + light pressure is the key to preventing heat buildup and melting. Citizens Bank Park seat material turned by Karl Henschel 4. How do I avoid chipping, melting, or poor finishes? Light cuts: 0.005–0.015" for roughing, 0.002–0.005" for finishing. Sharp tools: Hone frequently — a polished edge makes a huge difference. Cooling: Use compressed air or light water mist. Avoid oil-based lubricants. Technique: Let the tool do the work with minimal pressure. 5. Sanding, Sealing & Polishing for a Mirror Finish v2 blanks (with shredded material) often produce fine “plastic hairs.” Follow this proven process: Wet sand on the lathe starting at 220 grit (never lower), then progress through 320, 400, 600, 800, and up to 2000 grit if desired. Double CA Seal: Apply 3–5 thin coats of medium/thin CA glue, curing between coats to tame hairs and seal pinholes. Wet sand again to at least 800 grit. Apply 5–8 additional thin/medium CA coats for a strong base. For the ultimate glass-like shine, use our Magic Juice 6-step polishing compound: Sand to 800–2000 grit and mount on the lathe at 2400–3000 RPM. Apply each step (1–6) with a soft cloth using light pressure for 20–60 seconds. Wipe clean between steps and finish with a final buff. Lincoln Financial Field seat material turned by Karl Henschel Highmark Stadium seat material turned by Karl Henschel 6. How do I drill the blanks for pen kits? Best results come from drilling on the lathe using a sharp brad-point or parabolic bit at low speed (500–800 RPM). A drill press with a pen vise also works well. Always double-check your depth — measure twice! 7. Safety Precautions Wear eye protection and a dust mask. Secure the blank firmly and never leave the lathe running unattended. Use good ventilation and dust collection. 8. Common Mistakes & Troubleshooting Melting / stringy chips: Increase speed or sharpen your tool. Chatter / vibration: Check bushings and balance the blank. Dull or hazy finish: Progress through all grits and allow CA to fully cure. Pinholes or hairs: Use the double CA sealing method above. Pro Tip: Practice on a scrap blank first — our HDPE is very forgiving once you get the feel for it. Ready to turn your own piece of stadium history? Shop our Plastic Seat Blanks collection here and don’t forget to add Magic Juice for that professional mirror finish. For more inspiration, visit our Gallery or Contact Us. Legal Notice & Trademark Disclaimer Stadium Pen Blanks products are for lawful personal and custom use only. Customers are responsible for ensuring finished products comply with all trademark laws. We do NOT endorse the use of any third-party logos or team branding. © 2026 Stadium Pen Blanks. All rights reserved.

At Stadium Pen Blanks, we offer pre-tubed label cast blanks designed to fit a variety of pen kits. To help you choose the right blanks for your pen turning projects, we’ve compiled a detailed guide to the tube sizes compatible with popular pen kits. Below, we’ve organized the kits by tube size and listed them alphabetically for easy reference.  Jr. Series Pen Kits (12.5mm & 10.5mm Tubes) Our Jr. Series pre-tubed blanks are compatible with both 12.5mm and 10.5mm tubes, fitting a wide range of pen kits. The following kits are compatible with these tube sizes. Note that this is not an exhaustive list, but it covers many popular options. Jr. Series Pen Kits Atrax Jr. Aaron Jr. Anthony Commander Cyclone Desire Jr. Citizen Jr. Diamond Knurl Jr. Duke Jr. Emperor Jr. Gentlemen's Jr. Gentlemen's II Jr. George Jr. Great Palace Vine Jr. Hamilton Jr. Harold Jr. Imperial Jr. Independence Jr. Lincoln Jr. Majestic Jr. Milton Jr. Monarch Jr. Morgan Jr. Retro Jr. Statesman Jr. Zeus Kojent Triton Venus Voyager Sierra Clone Pen Kits (27/64” Tubes) Our Sierra clone pre-tubed blanks are designed for kits that use 27/64” tubes. These blanks are compatible with the following kits, listed alphabetically. Sierra Clone Pen Kits Broadside Diamond Knurl Diplomat Ellipse FlatTops Virage Liberty Liberty Click Major Mesa Monarch RoundTops Sienna Sierra Elegant Beauty Sierra Grande Sierra Vista Sirocco Wall St. II Wall St. III Zepher PSI Baseball Pen Kits (3/8" Tubes) For the Penn State Industries Baseball Pen Kit, our pre-tubed blanks are designed to fit 3/8" tubes. The compatible kit is: PSI Baseball Pen Kits Baseball Pen Kit Full Size Gentleman's Series Pen Kits (37/64"& 15/32" Tubes) Our Full Size Gentleman's Series pre-tubed blanks are compatible with both 37/64" & 15/32" tubes, fitting a wide range of pen kits. The following kits are compatible with these tube sizes. Note that this is not an exhaustive list, but it covers many popular options. Full Size Gentleman's Series Pen Kits Gentleman's Emperor Harold Pharaoh Monarch Oriental Dragon Great Zeus Great Palace Vine Abraham Major Crown Imperial Lotus Nobleman Genteelness's NASA Pen Kits (10mm Tubes) The WoodTurningz NASA kits, specifically the Shuttle Rollerball or Fountain Pen Kit, use 10mm tubes. These are distinct from the Sierra clone 27/64” tubes and require our 10mm pre-tubed blanks. NASA Pen Kits Shuttle Rollerball Pen Shuttle Fountain Pen PSI Bolt Action Pen Kits (3/8" Tubes) Our 3/8" pre-tubed blanks are compatible with the following Penn State Industries Bolt Action Pen Kits, listed alphabetically. Note: Our 3/8" Bolt Action tubes are not compatible with other bolt action styles (e.g., Mini 30 Caliber, Magnum, Vertex, Bolt Action Tec-Pen, Mini Bolt Action Keychain, or Detachable Bolt Action Keychain) due to differences in length or tube size. Bolt Action Pen Kits 30 Caliber Bolt Action Pen Bald Eagle Insignia Flag Bolt Action Bolt Action Ceramic Red, White and Blue Flag Deer Hunter Bolt Action Salute The Troops Bolt Action Statue of Liberty Flag Bolt Action PSI Nautical Pen Kit (3/8" Tubes) Our 3/8" pre-tubed blanks are compatible with the following Penn State Industries Nautical Pen Kit. Nautical Pen Kit Nautical Twist Pen PSI Civil War Pen Kit (3/8" Tubes) Our 3/8" pre-tubed blanks are compatible with the following Penn State Industries Civil War Pen Kit. Civil War Pen Kit Civil War Pen We hope this guide helps you select the perfect pre-tubed blanks for your pen kits. At Stadium Pen Blanks, we’re committed to providing high-quality blanks that fit your favorite kits. If you have any questions or need assistance, feel free to reach out!