Encouraging Entrepreneurship

One thing we haven’t talked a lot about is the makerspace Entrepreneurial Fellowship program. It’s a program to encourage entrepreneurship from the ground up. Over the years we’ve had a number of people come into the makerspace wanting to produce prototypes or make small quantities of something to sell – items they made can still found in shops locally and online. Our idea is to discover and support more people that thought about selling or making a product or service, then help them to actually do it.

wooden winter ornaments made by Jasmine who is one of our entrepreneurial fellows.
Winter themed ornaments made on our laser cutter, before painting, that were designed and for sale by Jasmine.

Thanks to a partnership with Main Street Greencastle, and financial support from the Indiana Economic Development Corporation(IEDC), we’ve formalized a program that supports and encourages people to take the next step in creating a business. Many people hear from others they should offer a product for sale or think about selling an idea they made. We’re helping start more cottage industry businesses that sell products at markets, through other stores, certainly online, and that might grow into something bigger.

At the core of the program is access to makerspace tools, resources (including entrepreneurial makers), and other resources they need. We’re innovating with them along the way to determine what works best, not surprising that this is a new/possibly first of it’s kind program. It’s certainly attracting some interest, not only from IEDC’s Community Collaboration Fund, but we were also featured on Inside Indiana Business when we started started the program. Our first cohort group is now filled and we’re planning a second. If you’re interested please read this program description and fill out an application!

Talking Pumpkins

For many years now at Halloween we’ve helped Putnam County Library for the Scary Science exhibit in the Kiwanis Room downstairs. We are often there 3D printing bats or witches hats, explaining how it works, or sometimes giving away laser cut ghosts and goblins. Last year we added a ghostly optical illusion using a technique called Pepper’s ghost to project holograms.

Animated pumpkin in action…

This year to try something different we 3D printed a pumpkin and then projected a talking face on it, which turned out to be another great illusion. By using a phone to project the face, most folks were looking behind the pumpkin or asking how we did it!

The idea is based on a project from DIY Machines, who deserves full credit for coming up with a great makerspace Halloween project idea. Unfortunately it’s a bit complex and pretty time consuming project, although we’ll incorporate more elements of it next year to display at the makerspace. And it was designed to be an outdoor display, while at the library we were going to be using it indoors. But having enough time to do it was the real limiting factor.

motorola Z phone with projection attachment.
We used a cellphone projector indoors so most folks didn’t notice how it worked.

We went ahead and printed one of the pumpkins in orange and then realized we could project the face on the pumpkin using a projector attachment for my Moto Z phone. All we really had to do was lay the phone on the table across from the 3D printed pumpkin to project the face on the pumpkin.

2025 Putt Putnam County

Early arrivals at Putt Putnam County in 2025

With a record number of mini golf holes, this year’s event exceeded our expectations with 24 community built mini-golf holes. People started showing up as quick as we could get the holes set up – it was a great evening for everyone to play mini-golf. With perfect weather the crowd grew into the largest I’ve seen yet!

View from the courthouse square of Putt Putnam County in 2025
It didn’t take long for lines to play appear by Indiana Street.

There really was so many creative mini-golf holes, you really can’t describe them all. This year we added a section for the pre-engineering high school class and some of them certainly raised the bar with lights and moving parts. And while they were popular, many of the simpler holes were still big hits with the players. And in many cases simple paid off in that they held up better and were still operating as intended at the end of the evening.

Scouts troops 99 and 999 had mini-golf holes near Vine Street.
Holes extended to Vine and Franklin Streets with Scouts Troops 99 & 999 anchoring us on one end.

Which points out one of the many things folks learn from making something and then using it. Of course there’s the challenges of working with others, almost all of the holes were built by a family, group, or team of students, and the inevitable compromises that have to be made when you’re dealing with a deadline.

And by the end of night we were treated to an extra special surprise, fireworks! What a great way to finish up, can’t wait to see what next year’s event brings…

Final picture from in front of the makerspace as we wound down for the evening…

9 Years of Putting Around…

Mini-golf holes lined down Franklin Street for Putt Putnam County.
Putt Putnam County 2024 had plenty of mini-golf hole challenges.

It’s that time of year when we host our annual mini-golf hole building event, Putt Putnam County. It’s hard to believe that we started this event back in 2016. Last year we had a total of 16 community built mini-golf holes lined down Franklin Street for anyone to play on a Friday night.

Laser Alert! mini-golf hole at the 2025 Putt Putnam County in Greencastle Indiana.
Lasers & smoke navigation in Laser Alert! added to this hole’s features.
Guitar based mini-golf hole.

I had too many favorites to just pick one or two. Greencastle High School’s Ghost Pirate Ship was certainly one of the most elaborate builds last year, you could even ‘putt’ the plank. And luckily there wasn’t enough power to vaporize the golf ball on Laser Alert! And some difficult ones too, I only saw one person get the ball up that guitar neck and into the soundhole. It hard to resist hitting the golf ball through downtown Greencastle on the Virtual hole, except of course for a few closed roads. A few favorites from previous years were there too.

It’s not to late to plan and build a hole for the 2025 event on Friday October 3rd. It doesn’t take long to build one, full details are on the Putt Putnam County webpage, and we’ve had some previous tips about making one. And if you can’t?

Please just show up and play a round on Friday night from 6-8 pm, it’s great family fun for all!

Making a Splint

3D printed finger protector
Finger splint/protector that was scaled up to fit.

After injuring a fingertip, leaf blower intake fan blades & fingers don’t mix well, I was looking for a splint to protect my now injured index finger. Couldn’t find one in the medicine cabinet at home and was thinking about going to the makerspace to get one out of the first aid kit there. Of course a friend mentioned that he figured I’d just print one. Of course I could!

So did a quick online search and found one that was an easy 3D printing job. After taking some measurements of my finger (don’t forget to take into account any bandages), then scaling up, 25 min later I had a custom fit finger protector! It’s worked great, I got to pick my own color, and doesn’t look bad if I do say so myself…

MRRF 2025

2025 Midwest Rip Rap Festival (MRRF) in Goshen Indiana, inside the main building

Last weekend I traveled up to Goshen Indiana for the Midwest Rep Rap Festival (MRRF), a trip every 3D printing enthusiast should make. It’s been 6 years since I went to MRRF, and it’s certainly grown since then! One big improvement: more space! When I went in 2019 it was so crowded it was difficult to walk around.

2025 MRRF table with castles and life-sized figurines.
By no means the only 3D printed castle there, but often the most crowded table in part to the life-sized figurines including girl on the right with pink & gray hair.

The annual event has changed slightly, although the biggest portion is still regular folks showing off what they’ve made. It does seem to have shifted more from new/unique 3D printers to what you can print, but there were still some different 3D printer designs there. There were several interesting belt printers, a few variations on the Positron printer, and a new Bondtech multi-material upgrade unit that looked really promising among others..

Death Racers at MRRF 2025
Death Racers on display before competition.

There were also many vendors there: Prusa had a large presence there, Polymaker had one of the most challenging tables with their interactive filament color guessing games, and Indiana based Atomic Filament had lots of filament at the show. And even some youtubers with tables, occasionally doing interviews, and of course a few vendor raffles (I won a Voron board from LDO Motion!).

Turtle on the right (with Tiny Bikes to the back left) took 15 spools of filament, 82 pieces, and 350 hours of print time.

But what I really noticed was the increase of the activities vs 2019, there was even a separate building for setup, repairs, and the competitive challenges. Death Racers, jousting in small tank like 3D printed cars where you knock off the head of opponents, were quite popular and Mayhem at MRRF continued this year. Then there was an occasional Tiny Bike parade in the main building and 3D printed drag racers outside in the parking lot.

DDrag Racing at MRRF 202
3D Printed Drag Racers setting up at the starting line Christmas Tree. An RC Fuel Truck is in the corner going out to ‘fuel’ the racers…

Perhaps what impressed me the most was the congenial, family friendly atmosphere of not only the participants but also the attendees. It will definitely be on the list to attend next year!

What’s a Makerspace?

It’s been nearly 10 years ago since we last wrote about what a makerspace is and having been with Castlemakers for so long my description has evolved. In the early days we had a tendency to focus on our tools and equipment and what additionally we could provide.

Doug points out the differences between 4 and 2 cycle engines.

Since that time I’ve realized it’s more than just equipment, a good makerspace includes people that offer experiences and skills to others. Today when I describe a makerspace to others I think of it as access to tools, equipment & knowledge that others might not have, education and skills that’s available/ offered to others, and a community of people that’s willing to help and share experiences. Those things together create an ethos and opportunities for others in a community – whether they’re part of the makerspace or not.

Many makerspaces, like Castlemakers, are organized as a nonprofit with an educational mission – but there are many other flavors of makerspaces serving different audiences and needs. Castlemakers uses Open Shop times, general public classes, and public event participation to help share our that wealth of experiences and knowledge to others in the west central Indiana region. I’ll write about Open Shop times happenings in a later post, but in the meantime stop in and discover what we have to offer!

Ornamental Beginnings

Cutting glass to make ornaments
Learning how to cut colored glass.

The last year the makerspace has been branching out into some different ‘making’ areas, some of them leaning more towards the artistic side. We’ve always done a few more unusual times, like jelly art, but this year it seem like we’ve had a few more of the A things in STEAM (Science, Technology, Engineering, Art & Math).

Tools used in cutting and breaking glass.
Arranging glass to make different ornaments.

Last weekend we did a workshop for our members so we could learn more about glass fusing since the makerspace now has a small kiln. One of our teenage volunteers, Ty, had taken a glass fusing class in Indianapolis and wanted to see what we could learn/create by making some holiday ornaments with the materials and equipment we have at Castlemakers. He even volunteered to lead the workshop.

Holiday ornaments in the kiln.
Glass ornaments made in our kiln

This is only the second time we’ve fired up the kiln, but we’re excited about the results! Some benefactors, along with the kiln, gave us a number of glass cutting and shaping tools and a selection of colored glass. They had used the setup for glass fusing and slumping, there also seems to be some things that can be used for stained glass. We’ve still got a lot to learn, but we’re thinking could become a general class in 2025. If you’re interested, sign up for our email distribution list or stop by the makerspace during Open Shop hours – we’re always glad to share what we’ve learned or learn from others…

Practical AI

On October 23rd we did our second Artificial Intelligence (AI) class at Castlemakers, focusing more on the uses of AI. In June we did a class on creating your own AI LLM on your own computer (which not only is a great way to learn about the technology but also addresses privacy concerns), but realized there was also interest in how it can be used.

One of the key points in the class, regardless of of the AI product you use (and we showed several), is phrasing the question. Putting together a scenario and asking the AI engine to report or behaving within context of the person or situation makes a real difference in the results. Ian, who utilizes AI and develops software, also demonstrated a system he made where you could input PDF or other documents that created a video podcast summary with 2 AI avatars discussing the results. It was kind of like Google’s Notebook LM on steroids.

If there’s interest in the future, we could put together another class on the subject, although the field is moving so rapidly we’d have new topics to cover. Next time we could perhaps even have AI teach the class!

2024 Putt Putnam County

Putt Putnam County looking down Franklin Street in Greencastle Indiana
Mini golf holes lined up down Franklin Street for this year’s Putt Putnam County.

With perfect weather and a great crowd, our 8th annual Putt Putnam County was memorable in many ways! This year we had 16 community built mini-golf holes lined down Franklin Street on Friday October 4th for anyone to play a round in downtown Greencastle, our largest number of holes yet.

Ghost Ship golf hole
Young girl watches her golf ball walk the plank into the shark’s mouth.

With so many interesting mini-golf holes, it was hard to pick a favorite. We had a mix of new and a few popular holes from previous years – for this blog post I’ll mention some of the newest ones. But I will note Putt Putnam Virtually, last year’s hole simulator where you hit a golf ball down the streets of downtown Greencastle, was updated with obstacles on Washington Street – just like the real thing!

Guitar hole
“Playing Along” was a simple but challenging shot up the neck.

At one end was Greencastle High School’s Ghost Ship, a very popular multi-tier hole & perhaps the most elaborately built new one this year. On the courthouse end Putnam County Public Library had a Beetlejuice Beetlejuice themed hole.

Laser Alert! mini-golf hole
The fog machine made the Lasers easier to see

The guitar hole also presented one of the toughest challenges this year – the guitar frets gave a bumpy roll. A last minute addition, Laser Alert!, had great visual effects & was extremely popular with the kids.

With 16 holes this year, there are too many to mention in this post so I’ll work on adding a slide show to the Putt Putnam County project page. And of course it’s not to early to start thinking about next year, we’ll have the 2025 event on Friday October 3rd. Start coming up with ideas now!

Greencastle Indiana's Makerspace!