Cheap Custom Parts

mctrivia

Anyone interested in getting cheap custom parts made? I can build anything up to 100x100x130mm(4x4x5") with an overhang of less then 45 deg.

For a limited time only I am willing to do this for the ridiculously low cost of $15 for prints up to 30CC and only $0.50 cents per CC after that+ shipping and applicable taxes.

I can get parts made in either black or white ABS plastic.

If you provide an STL file of your design I can tell you how many CCs of plastic would be used.

Each of these parts use less then 25CC.

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Lots of propeller based products in stock at affordable prices.

HollyMinkowski

Those parts look intricate and well turned out!
Do you make these using your own equipment?

mctrivia

Yes. I purchased a small 3d printer so o could make robot parts.

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Lots of propeller based products in stock at affordable prices.

hmlittle59

What is a 3d printer and how does a printer make plastic parts???


Howard

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I'M STILL LEARNING SO MUCH...BUT STILL KNOW SO LITTLE!!!

hmlittle59

mctrivia

A 3d printer prints physical objects. Mine melts abs plastic and places it down in 0.35mm tall layers

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Lots of propeller based products in stock at affordable prices.

Martin Hodge

hmlittle59 said...
What is a 3d printer and how does a printer make plastic parts???


Howard

http://www.makerbot.com/

hmlittle59

Looked it up on Google...Demo Video.

Howard

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I'M STILL LEARNING SO MUCH...BUT STILL KNOW SO LITTLE!!!

hmlittle59

Microcontrolled

WOW that looks better then I would expect from a 3D printer! Nice!

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Check out my new website!!

Use the Propeller icon!!

Follow me on Twitter! Search "Microcontrolled"

mctrivia

Ya parts come out pretty well. the fins on the prop hats I am making are a little thin but they look cool.

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Lots of propeller based products in stock at affordable prices.

P!-Ro

I could sure use it but I'll probably just wait until Lambert can get caught up with with his machines. Unlike the cupcake printer which are based off the first generation zipzaps, he builds the second generation Mendel printer which he has modified·lower it's·cost. From talking to him a while back he told me that makerbot is the last one still selling 3D printers off the first version zipzap, selling the best machine ever to come out of it. The newer versions now offer finer accuracy and adjust to small differences in design preventing them from jamming. Just something interesting I thought I'd add to this thread.

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90 * 2 = Pi

Jay Kickliter

mctrivia, did you have any trouble getting you printer dialed in? I managed to break the teflon piece on the extruder in the first evening; still haven't figured out why.

mctrivia

No had no problems other then not so easy to find instructions that make sense. I managed to break the idler wheel and the z axis control board though. took me a month to get all the replacement parts. I now have it printing not stop and coming up with some pretty good results of course it can always get better.

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Lots of propeller based products in stock at affordable prices.

Cluso99

mctrivia: I have just been looking at the makerbot. Looks great. So how is your's going?

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Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: CPUs Z80 etc; Micros Altair etc;· Terminals·VT100 etc; (Index) ZiCog (Z80) , MoCog (6809)·
· Prop OS: SphinxOS·, PropDos , PropCmd··· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBlade Props: www.cluso.bluemagic.biz

mctrivia

When it is working it works well. If you want something that works perfectly out of the box though this is not it. There are several places where it can fail and if you do get one you should buy some extra parts.

Failure Modes:
*Idler wheel cracks - the idler wheel pushes the plastic filament against the drive motor. The original is made of acrylic and can break very easily. Recomend buying an aluminum replacement off ebay.
*PTFE insulator leaks - this is the most common failure mode. Between the plastic drive system and the hot barel is a PTFE insulator. If something goes wrong during a print the PTFE insulater can get warped and plastic will leak through around the barels threads and out. To help provent this it is best to get a PEEK or Hybrid replacement off ebay and to keep a spare.

Other Negatives:
*Noisy
*Steppers occasionally skip a step especially when hot requiring you to re do the print
*Standard heated build platform takes a long time to heat up
*Standard heated build platform is only 80x100 do to bolts(I am fixing this on mine by replacing with counter sunk screws)



It is great to be able to make your own parts though.

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Lots of propeller based products in stock at affordable prices.

P!-Ro

You can also check out this: techzonecom.com/index.php

It seems he stopped selling the machines on there however due to falling behind on orders (he really hoped I could work this week). Anyway, should he get caught up again I can give out a promotional code. I believe the price for the printer is about $800 with this code.

wjsteele

pi'd said...
You can also check out this: http://techzonecom.com/index.php

Nah... that's not a good place... he was asked by the community to stop taking orders because he wasn't actually delivering any.

A better place to go for the Mendel is the project home page itself, here: objects.reprap.org/wiki/Main_Page

Bill

Cluso99

mctrivia: Yes I have been reading up. They apparently have a new metal feeder cog and I have seen discussions about other extruders. I watched the assembly videos on youtube tonight.

I liked the one that uses plastic blocks made by a MakerBot and epoxyed together to make the case instead of timber. Believe it used 5kg of black ABS.
There is a translucent blue acrylic lasercut one that looks awesome. The acrylic one could be glued and save a lot of lasercutting of the screw slots.

It's a pity the electronics are on the outside. The case hides most of the works, but the cable look a mess. I have a mini-itx power supply and two old identical printer/scanners so I must see what parts I can scavenge for building one. I would like to drive it with a Propeller

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Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: CPUs Z80 etc; Micros Altair etc;· Terminals·VT100 etc; (Index) ZiCog (Z80) , MoCog (6809)·
· Prop OS: SphinxOS·, PropDos , PropCmd··· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBlade Props: www.cluso.bluemagic.biz

mctrivia

Designing the electronics would not be difficult. If using steppers I would use the stepper driver boards they have designed. they are open source and I could get them made myself pretty cheap. The motherboard I am sure could be replaced with a propmod-us_ps_sd or any equivalent board with an sd card. It would just be a matter of writing code to read the gcode from the sd card and driving the steppers accordingly. Would be great to use servos instead of steppers as lost steps are annoying.

The build platform I would modify to be powered directly from the ATX power supply and use a mosfet to control its temp write on the platform. It needs to be 110C or off no other temps are really needed.

The print head I would keep stock since it is nice to have inter swappable parts.

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Lots of propeller based products in stock at affordable prices.

P!-Ro

I agree with you mctriv, servos may be better. I know there are some 10 bit magnetic encoders out there that could be used to make the servos, then homing wouldn't be necessary anymore and the current drawn would be lower. The only problem I see with the propmod, however, is there needs to be a reason for the user to take the propeller off the board, otherwise there is extra cost there for the extra soldering/connectors. The schematic wouldn't be too hard to copy/paste to the electronics board, though.

wjsteele: lol, don't blame you. He's been having a lot of trouble lately, you should see how busy his house is trying to fill out orders [noparse]:)[/noparse]
not to mention he has 5 kids running around.

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90 * 2 = Pi

mctrivia

the motherboard contains the following:
*power supply connection point
*MCU and crystal
*Connections to other hardware
*Serial interface

a propmod or any of the other prop boards could easily replace that.

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Lots of propeller based products in stock at affordable prices.

P!-Ro

Yes, and the usb connection uses an ftdi chip as well which would work with the prop, but it would become necessary to make code on the prop that would understand the signals that are coming from the pc.

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90 * 2 = Pi

Cluso99

mctrivia: What is the OD of the cogs on the Z axis threaded rods? Can you make them on the MakerBot?? If so, I may be interested to get you to make me a few bits.
I have been looking into building a version myself. In Australia we are supposed to be metric, but guess what. The local hardware store carries 5/16" ZP threaded bar with Whitworth thread, but not metric 8mm. It is close enough to be used instead. As for the roundbar, I haven't found it yet.

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Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: CPUs Z80 etc; Micros Altair etc;· Terminals·VT100 etc; (Index) ZiCog (Z80) , MoCog (6809)·
· Prop OS: SphinxOS·, PropDos , PropCmd··· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBlade Props: www.cluso.bluemagic.biz

mctrivia

the od is 27.5mm. someone has designed them already www.thingiverse.com/thing:1085 but it is stated that they are difficult to get to print well. I do have a 0.35mm head here which should hopefully make it possible but I have yet to get a print to work with that tiny head.

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Lots of propeller based products in stock at affordable prices.

Cluso99

Thanks mctrivia.

I have been researching the extruder design as there seems to be a lot of problems here. So far I have found ceramic tubes that could be used as the primary insulator to the shaft and can be glued with ceramic cement.

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Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: CPUs Z80 etc; Micros Altair etc;· Terminals·VT100 etc; (Index) ZiCog (Z80) , MoCog (6809)·
· Prop OS: SphinxOS·, PropDos , PropCmd··· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBlade Props: www.cluso.bluemagic.biz

mctrivia

yes. my recomendation would be to do the following:

1a) Replace idler wheel with Aluminum Idler Wheel
1b) more expensive but would be better way to go is replace entire extruder with Really strong filament driver
2) Replace standard heater wire with Ceramic Heater
3) Install Support on heated build platform
4) Replace PTFE insulator with Hybrid Insulator

These 4 things would drastically improve the reliability of the system. I have done 1a,3, & 4 so far. I will do 1b, and 2 when I get the money. For now I am desperately trying to find the $215 I need to finish a bot I intend to take on my hike up Mount Robsin in August. I am running out of time.

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Lots of propeller based products in stock at affordable prices.