Plasma Cutter Motor Motion

DSCN8554

The plasma cutter three motor controllers are working and spinning some test stepper motors on this board. It is using GRBL on the arduino uno linked to stepper motor controllers as a test setup. We will be moving away from GRBL to a DAQ card to incorporate the torch height controller and other aspects.

Anyone got a 48V 13.5+ amp power supply? Want to boost this from 24V to 48 to give the system higher speed.

No Comments

Updates on the Laser

DSCN8537

The laser is not as happy as it once was. The laser is cutting a V grove now, not a sharp line and calibration is being done. A new lenses is ordered, but to add something new, a passive cooler was installed. The cooling fluid now goes through an old chiller radiator. However a better solution would be to add a rainbow stripe to it as that would make the laser at least 20% cooler in 10 seconds flat.

 

No Comments

State Of Ze Projects

There are many projects at Think|Haus. These are just some of the most prominent ones and what is happening with them. If someone wants to help out or move a project along faster, there is always room for help!

1. Dinosaurs

DSCN8481

We have dinosaurs at ThinkHaus. There are plans (someone needs to execute this plan) to make more dinosaurs and sell them. Likely looking at $8/dino or so (speculative price). Need someone to take on this project. More dinosaur designs are available too. When the plasma cutter is finished, these would be cut out of aluminum and steel too!

2. Laser Cutter

The laser cutter works, but has some heat issues. It generates 1kW of heat and this heats up the water to the point that two buckets of water were needed. The water system was not working a while ago, and is now fully functional, but a heat exchanger and a chiller are being added. New lenses are also en route, but on the slow boat from China.DSCN8483DSCN8472DSCN8484

3. Kiln

The kiln needs its elephants. No, it needs its elements, but elephants are made of elements. The elements are at The Pottery Supply House in Oakville. They are waiting to be picked up, will be inserted, and then tested at a member’s house. A power source (220V 16A) socket for the kiln is still needed.

DSCN8482

4. Engraver

The engraver works but has backlash issues. Backlash means that when it moves, it does not move as desired. Instead of a circle, it leaves a small gap. Think of putting your finger in a shot glass and sliding the shot glass around on a table. If you move your finger in a circle, the glass will not follow exactly the way your finger moves due to the clearance between your finger and the glass. That is backlash. See the nut? There is no anti-backlash nut on it.

Anti-backlash nuts were ordered and are en route on the slow USPS from the US. Also noted, a mounting plate is now ready for the machine.

DSCN8490

DSCN8489

 

 

 

 

 

 

4. Plasma Cutter

The plasma cutter requires motor controllers (on a slow boat), a data collection board, and a few other devices. Also need 220V 30A power source. A potential solution is to make a water bath so that the plasma cutter does not emit fumes and sparks.

DSCN8486

 

5. Mill

The mill works! It runs, and has collets and is ready to go! The only thing one may want is a vice to hold a work piece to the table. Also need some end mills. But it works and is ready!

DSCN8492

 

6. Lathe Thread Gearbox

This project did not make much notice. A shear pin in the thread gerabox for the lathe was sheared. To get a new shear pin in, a whole whack of work was done. It is almost back together and needs a roll pin. Until said time, one cannot use the thread cutting features on the late. (I.E. I cannot use the thread cutting features)DSCN8495

7. Electronic Organization

Some large quantities of old circuitry was given to Think|Haus. For a while there has been an interest in an organization. I am of the suggestion of lots of pill bottles with each pill bottle with an indicated reistance/capacitance/rating and storing these bottles so they are easily accessible, but it needs lots of pill bottles (if anyone has access to some). The alternative are those divider things. People have been on the look out for one on sale.

DSCN8497

 

8. Delta Printer

Saving the good one to the end. I have the full laser and CAD drawings of a delta printer. I also have the metal for the frame. What is needed is a sacrificial RepRap and the 9 V bearings. The rest is ready! Someone want to jump on this? I have enough for 2 printers.

Kossal10457934_10152362844877127_8916847028534747964_n

 

9. Printer in a chamber

My project. I am waiting on the engraver to make the side plates. This is on the back burner. Hey, I have a Masters to complete. Don’t have the time or money to work on projects all the time.

No Comments

DSCN81811484067_10151774020182127_1301621742_o

 

An example of a sign in the woods I made. First, get a CNC mill, get a design and cut it out. Here are some pictures I took while making it. If anyone needs the files, feel free to ask.

10497872_10152096338002127_3712760338522123074_o10448603_10152096338227127_8328385093226134468_o1909512_10152096338437127_3238345292877805214_o

No Comments

open|haus

Open|haus_7/28/2015

Every Tuesday, we open up our doors at 7 pm to invite in the members of the general public.

We’d love for you to come in and show off the projects you’ve been working on or if you are stuck on a project and need other people to help you brainstorm answers we are here to help you with your questions too!

Whatever the skill level, you are always welcome in our ‘Haus’. We love teaching beginners the skills they need to succeed and sharping our own skill by learning from experts who drop by.

We are located in Hamilton, Ontario at 25 Dundurn St North. Just head to the back door and when you come in you’ll see a second door to your left. We are just up the set of stairs.

See you tonight @ 7pm

Google Map

No Comments

The torch is mounted

DSCN8380 DSCN8381 DSCN8382

The plasma cutter is mounted and the end stops are set up. The stepper motor controllers were also ordered. Should be able to get this together in the next little while.

 

 

No Comments

open|haus

Open|haus_7/21/2015Every Tuesday, we open up our doors at 7 pm to invite in the members of the general public.

We’d love for you to come in and show off the projects you’ve been working on or if you are stuck on a project and need other people to help you brainstorm answers we are here to help you with your questions too!

Whatever the skill level, you are always welcome in our ‘Haus’. We love teaching beginners the skills they need to succeed and sharping our own skill by learning from experts who drop by.

We are located in Hamilton, Ontario at 25 Dundurn St North. Just head to the back door and when you come in you’ll see a second door to your left. We are just up the set of stairs.

See you tonight @ 7pm

Google Map

No Comments

open|haus

Open|haus_7/14/2015Every Tuesday, we open up our doors at 7 pm to invite in the members of the general public.

We’d love for you to come in and show off the projects you’ve been working on or if you are stuck on a project and need other people to help you brainstorm answers we are here to help you with your questions too!

Whatever the skill level, you are always welcome in our ‘Haus’. We love teaching beginners the skills they need to succeed and sharping our own skill by learning from experts who drop by.

We are located in Hamilton, Ontario at 25 Dundurn St North. Just head to the back door and when you come in you’ll see a second door to your left. We are just up the set of stairs.

See you tonight @ 7pm

Google Map

No Comments

The Sign Is Coming!

The CNC engraver is being revamped! The goal, make signs. Or engrave. Or cut out circuit boards. It really depends on what people use it for.

DSCN8303 DSCN8305 DSCN8307

In the near future an aluminum plate with 1/4-20 holes spaced 1″ apart will be put on top of the wooden sheet. The wooden sheet is a machined level surface. The aluminum plate will have 4 pins in the corner that a wooden sheet will fit onto. That way wooden sheets can be populated, plopped on, and machined.

Potential uses:

– Making signs

– Engraving circuit boards from copper coated sheets and cutting through holes

– Engraving brass, aluminum, or steel plates

– Printmaking (rolling press) multi-colour prints

– CNC milling of wood

No Comments

Making a new 3D printer

V3 Working on a 3D printer in a heated chamber. Why? Well look at the crack in the green dinosaur.

What happens is the hot (DSCN8230230C) plastic is laid down onto the old cold layer of plastic. Then the plastic cools and a new layer is laid on top. That layering builds up and shears, resulting in the plastic separating. To prevent this, one builds the parts inside a heated chamber. Why are there so few heated chambers on standard printers? Well, bad news, it is patented (expires in June 2020). Good news, not selling the product and can do it for my own things.

A key issue with the heated chamber is that it needs to be around 90C. This temperature is bad for motors and acrylic isn’t too strong at that temperature so I designed away. Above is the Version 3(ish). Version 0 first though!V0

Version 0 was a wooden structure mounted around the Kossal Delta printer. This design was cut out of wood and was mostly complete, but there were several key flaws with the whole setup.  The largest being that the arms hit the frame and the holes in the frame were too large. This caused the whole design to fall apart and was taken apart shortly after being built. Didn’t even take a photo of it it was so bad.

V1

Version 1. I removed some of the panels so you can see what is going on here. This was based off of the Prusa design. The bed would move along a set of rails while the Z would lift the X axis. I was planning on using door sealing brushes along the gaps to prevent air flow. In the end, this was a good design but required a lot of table space. The design was then changed.

V2

Version 2 was almost complete! I think there was a photo of it on a prior post. It is shaped like a house. The bed moves vertically while the head moves in the XY directions. The head is following a H Belt design. This design is good in theory, but requires very stiff joints to ensure that the carriage is moving correctly. This design is popular in the industrial quality machines, but wouldn’t work out too well. Too much shaking in the joints.

V3 Version 3 is what is being built now. it follows a different setup. More complex and requires more rods and parts, but is more stable and simpler in design. Fewer parts in the main assembly and less chance of failure. It is also the house shape, but a simpler design on the outside overall. Hoping to get this one done next month.

 

Unless, of course, I change the design again.

No Comments