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How to Modify 3/8″ Threaded Bolt-On Caster Wheels to Fit Unthreaded 7/16″ Mount Points on Home Hospital Bed

If you have a home hospital bed that needs to be relocated easily but can’t find unthreaded caster wheels, this guide might be helpful to you.

The problem that I recently encountered was a very heavy home hospital bed that needed to be moved around easily without being dragged around on a new floor. The particular bed that I was dealing with was manufactured by Thill, Inc in the USA. It is at least 30 years old and exceedingly heavy.

It sits on four feet capped with glued-in plastic inserts with 7/16″ holes. Judging by late model home hospital beds, there are caster wheels that lock into these holes. Unfortunately, I couldn’t source four of them within the tight time frame that I was needing to make this bed mobile.

I knew that I could get threaded bolt-on casters with non-marking rubber wheels from Rural King in Waycross, Georgia. However, those caster wheels’ bolts were 3/8″ threaded. I needed a way to make those bolts larger and secure on the bed. I thought of how to build a sleeve that would increase the bolt’s diameter but not be easily compressed with use. I had just finished drinking a canned Starbucks Espresso when I imagined how I could use its aluminum can to build a sleeve.

My plan was to cut some of these aluminum cans into sheets that I could wrap around the 3/8″ bolt to increase its size to 7/16″ when it was pushed into the mount point on each foot of the bed. Any aluminum can would work, but I had a the Starbucks cans on-hand, so that’s what I used.

Using a razor, I cut the top and bottom of each can off. Then, I carefully cut down the height of the can to create a sheet of aluminum. Then, I used tin snips to cut the sheets of the needed length and width to match the bolts on the caster wheels.

This is approximately what each sheet looked like, but I used ones with cleaner edges for the final assembly.

I tightly rolled the aluminum sheet around the bolt. Holding it in place with my fingers, I pushed the bolt into the mounting point. If it slid in too easily, I used a longer sheet of aluminum to bulk it up before trying again. The goal was to install the caster wheel securely so that it wouldn’t wobble or fall out if the bed were lifted off the floor.

Once the four caster wheels were installed, the bed could be easily wheeled around on the floor with minimal effort–far easier than trying to lift or drag its heavy mass!

July 7, 2026
Star Wars Collection Additions from Emmitt’s Toy Emporium and eBay

While I was in Georgia visiting my parents this past month, I acquired a few more Star Wars action figures, playsets, and a vehicle to add to my collection.

I knew that I needed to drive my mom to the Mayo Clinic in Jacksonville, Florida for tests and doctor’s appointments while I was there. I figured that I could visit comic shops or antique stores to look for Star Wars action figures for my collection.

During my online research, I stumbled on Emmitt’s Toy Emporium and a photo of a glass product counter with a Kenner Star Wars Rebel Command Center in it. The photo was dated three months ago. I had been trying to find one of these at a fair price on eBay for a long time without any luck. I figured it was worth checking out even if the playset had sold before I arrived. Thankfully, he still had it in stock and the price for the playset sans action figures was $119. Emmitt and I worked out a deal for the playset and some figures.

While I was there, Emmitt showed me some of his other items for sale, and he let me fire the motorized cannon on a complete Y-Wing Fighter (1983).

Before the third trip to Mayo Clinic in Jacksonville, my dad asked to see the toys that I scored, so I showed how they were setup and explained their release history. I suppose he saw how happy they made me and he acknowledged that I had done a lot of work (and there were still more left to do in the next two weeks), so he gave me his blessing to get a few other things that I had seen at Emmitt’s shop–the complete Y-Wing Fighter with motorized cannon (1983) and the Creature Cantina Action Playset (1979). It was a pleasure dealing with Emmitt, who knows how to bargain fairly.

I had a $10 off $50 purchase coupon from eBay, which I used to reduce the price on the Rancor monster (1984) from Wheeljack’s Lab. Now, I need the Rancor Keeper action figure (1984).

I’ve still got a ways to go, but I wonder if I can rebuild my collection to be as robust and interesting as the collection that I had to sell off in the early 2000s.

July 6, 2026
My Humble Star Wars Collection

Panning around my desk at home is the Star Wars version of the original opening toThe Ray Bradbury Theater. My favorites are the Kenner line of action figures. To the left of my computer monitor is Sy Snootles and the Rebo Band set, which is sealed in its original box and blister pack, but the cover plastic has yellowed and Max Rebo’s skin has faded to a lighter blue. To the right and behind my home-built mini-AI workstation is Jabba the Hutt smoking hooka and reclining on his throne. Klatuu, Amanaman, Bib Fortuna and others mill about. Slave Leia, a Kenner-inspired action figure by Stan Solo Creations, completes the scene. A 1/144 scale Bandai Millennium Falcon (ESB version) swoops away from Jabba’s den around my computer. Directly in front of my keyboard are The Emperor safely sealed in a mail-away baggie, and bearing arms in a row are the bounty hunters contracted by Darth Vader aboard The Executor to locate the Millennium Falcon—Zuccuss, IG-88, Bossk, Dengar, and 4-LOM, but wait, Boba Fett should be here. Oh, he’s just above my monitor in the cockpit of Slave I that is posed mid-flight thanks to a LEGO Technics stand that I built for it. To its right is the Millennium Falcon on another custom LEGO display stand. The Dagobah Playset completes the shelf with Luke, R2-D2, Yoda, and Obi-Wan Kenobi looking across at an X-Wing Fighter with Battle Damage stickers applied (Darth Vader awaits hidden in the Cave of Evil). To the right of my trackball are two Stormtrooper from Hasbro’s updated 3 3/4”-line called The Vintage Collection that I fondly think of as Tag and Bink. To my right is The Emperor’s Thone Room playset and the huge box containing an unassembled Bandai Perfect Grade 1/72 scale Millennium Falcon (ANH version).

Living in a one-bedroom apartment in Brooklyn requires creativity when it comes to one’s hobbies. My simple solution for my Star Wars collecting is to surround my desk area with my action figures and models. I have a mixture of original Kenner 3.75″ action figures, vehicles, and playsets; Hasbro re-issued “Retro Collection” figures; Stan Solo Creations re-issues and originals; Hasbro modern 3.75″ figures including “The Vintage Collection;” LEGO minifigures and sets, and Bandai Millennium Falcon models (1:350, 1:144, and 1:72 scale–the middle one is built, the other two remain to be assembled and painted).

June 10, 2026
Vintage Computer Spring Cleaning

As I’ve written about before here and here, my small office space at City Tech has accumulated many vintage computers since 2014. Due to computers getting so densely packed into my space, it was difficult to show them to interested students or dig them out for classroom demonstrations. After failing to find any other colleagues around campus interested in salvaging those I didn’t need, I put in an e-waste request to have 15 computers removed. After recording serial numbers and other pertinent information, I stacked them next to the office entrance and I rearranged the remaining computers to be more presentable and easier to get to without too much hassle.

Also, I used some LEGO and DUPLO in the office to build stands for the large magnetic disk from my parents’ auto parts store computer and an Apple Newton donated by one of my friends at City Tech.

June 8, 2026
DIY LEGO Display Stands for Kenner’s 1979 Millennium Falcon and 1981 Slave I Vehicles in Flight

I wanted to display my Kenner Millennium Falcon, which I’ve had for awhile, and my recently acquired Slave I on a shelf above my desk at home. While I liked seeing them on the shelf above my desk–Falcon with gear down and Slave I resting on its base–I thought displaying them in flight would look a lot cooler. There are aftermarket displays, including some nice ones that are clear acrylic, but since I have so much LEGO on-hand, I figured I should use what I have instead of purchasing something new. Below, I’m including detailed photos of each stand in case you are interested in building your own.

LEGO Flight Display Stand for Kenner Millennium Falcon (1979)

The Falcon display stand presented an interesting problem. Due to its asymmetrical design (with cockpit stuck off on its forward right quadrant), getting it to balance from the center gunner platform was difficult. Also, I didn’t want to build the stand with a wider width so that I could avoid putting any weight on the fragile loading ramp piece. A very simple solution presented itself when I ran out of single-stud wide tires. Putting a two-stud wide tire on the front support arm in the direction of the cockpit substantially balanced the Falcon so that it doesn’t wobble or move on the stand at all even while I’m typing on my keyboard below it on my desk.

LEGO Flight Display Stand for Kenner Slave I (1981)

Slave I’s unique design presented its own unique challenges for building an in-flight display stand. It is designed to be in flight mode by someone grasping the handle on the back of its base. The straight forward approach would be to build a long arm with a hook or some assemblage to “grasp” around the handle. When I was testing this out, I didn’t have enough long black 1 x n Technic bricks to construct a stable and supported arm (needing at least a sandwich of Technic bricks over and under a 2 x n plate).

I opted to build a shorter support arm that would contact with Slave I in three places–hook around the bottom of the handle for stability, 4 x Technic, Axle Connector Double – Flexible Rubber holding the weight under the two bottom engine exhausts, and two 1-stud wide tires under the screw assembly that holds the base at the loading ramp together.

Due to its center of gravity, I angled the arm back a couple of degrees and built the display stand’s base wide, short in the back, and long in the front.

June 2, 2026