Improvements I've made in the last year

Post improvements made for UP, and share ideas.
goopyplastic
Posts: 42
Joined: Mon Jul 30, 2012 5:53 am

Re: Improvements I've made in the last year

Post by goopyplastic » Mon Aug 27, 2012 4:34 am

I guess my concern with the shapeways nylon is the msds melting temp of >80c / 176f ... however they list the decomposition at 300c and ignition at 380c so it's not going to burst into flames at least. Guess I can test some pieces in an oven and see what happens.

For the stainless since it goes through a green state I am pretty sure the part as drew has it would snap in half at the filament guide channel being only 1.1mm thick before they could fire it solid, and as mentioned before I think the holes won't size properly.

So this is what I am thinking of trying to have them print:

Image

The holes are sized to 2mm, then will be drilled out to 3mm for a good fit with the pins (pin is 2mm in the picture just to test assembly)
I also filled the filament channel so it is close to 3mm part thickness but left some indents as a guide when filing / milling out the channel to the correct size.

Another thing I am looking at is having a print done in ultra detail then trying some lost wax casting etc..

chrisx86
Posts: 1
Joined: Mon Sep 17, 2012 8:20 pm

Re: Improvements I've made in the last year

Post by chrisx86 » Mon Sep 17, 2012 8:28 pm

hi drew,

great improvements! I am about to get one up! and I would really like to print PLA. (Mostly because of the fumes)
is there a possiblity to still get these custom parts from you?

thanks a lot,
chris

User avatar
DrewPetitclerc
Posts: 581
Joined: Sat Feb 12, 2011 7:39 am
Location: Silicon Valley California
Contact:

Re: Improvements I've made in the last year

Post by DrewPetitclerc » Tue Sep 18, 2012 2:18 pm

Hi Chris

Yes you can purchase a set, send me a personal message through this site with your email address and I will put you in touch with the maker.

Regards
Drew
Drew Petitclerc
Petitclerc Designs
Owner/Senior Principal Designer, prototype, tooling and test equipment design and 3D printing
http://flash-graphics.deviantart.com/
http://www.thingiverse.com/DrewPetitclerc

Wolfy
Posts: 85
Joined: Wed Jun 01, 2011 3:29 am
Location: Scotland

Re: Improvements I've made in the last year

Post by Wolfy » Tue Sep 18, 2012 11:18 pm

Very interesting reading - thanks for sharing. The extruder mount is particularly intriguing although I think the quoted price for it is laughable. Is this really what companies pay eachother for little mass-produced bits of metal? You'd be better off printing the part and casting it. Its clear how a thin strip of metal folded at a right angle would be very prone to bouncing (just like a diving board) and that a rigid design is needed. No way I'd pay what these companies are quoting though - I'd rather make my own.

Billzilla
Posts: 71
Joined: Fri Sep 09, 2011 2:38 am

Re: Improvements I've made in the last year

Post by Billzilla » Tue Sep 18, 2012 11:46 pm

Wolfy wrote:Very interesting reading - thanks for sharing. The extruder mount is particularly intriguing although I think the quoted price for it is laughable. Is this really what companies pay eachother for little mass-produced bits of metal? You'd be better off printing the part and casting it. Its clear how a thin strip of metal folded at a right angle would be very prone to bouncing (just like a diving board) and that a rigid design is needed. No way I'd pay what these companies are quoting though - I'd rather make my own.
Same here.
I'd like one as well but the cost for such a small part makes it out of the question.

User avatar
DrewPetitclerc
Posts: 581
Joined: Sat Feb 12, 2011 7:39 am
Location: Silicon Valley California
Contact:

Re: Improvements I've made in the last year

Post by DrewPetitclerc » Wed Sep 19, 2012 12:31 am

Wolfy wrote:Is this really what companies pay eachother for little mass-produced bits of metal?
No, this is half of what it cost to have a single part made by any well run machine shop, go ahead and ask one for a quote for one set. :x
If a shop began to "MASS" produce them then the cost can come down but that is not what is going on here. :roll:
But good luck with producing your own, some have been marginally successful and I hope you will be too. ;)
Drew Petitclerc
Petitclerc Designs
Owner/Senior Principal Designer, prototype, tooling and test equipment design and 3D printing
http://flash-graphics.deviantart.com/
http://www.thingiverse.com/DrewPetitclerc

Wolfy
Posts: 85
Joined: Wed Jun 01, 2011 3:29 am
Location: Scotland

Re: Improvements I've made in the last year

Post by Wolfy » Wed Sep 19, 2012 1:53 am

DrewPetitclerc wrote:No, this is half of what it cost to have a single part made by any well run machine shop, go ahead and ask one for a quote for one set. :x
Dam! Thats even worse!
DrewPetitclerc wrote:If a shop began to "MASS" produce them then the cost can come down but that is not what is going on here. :roll:
A design once established and replicable by versatile / non-specialised tools is still technically mass production.
DrewPetitclerc wrote:But good luck with producing your own, some have been marginally successful and I hope you will be too. ;)
Thanks - I'll let you know :)
Out of interest, who has been marginally successful and how do their results differ from yours?

User avatar
DrewPetitclerc
Posts: 581
Joined: Sat Feb 12, 2011 7:39 am
Location: Silicon Valley California
Contact:

Re: Improvements I've made in the last year

Post by DrewPetitclerc » Wed Sep 19, 2012 2:36 am

Wolfy wrote:
DrewPetitclerc wrote:No, this is half of what it cost to have a single part made by any well run machine shop, go ahead and ask one for a quote for one set. :x
Dam! Thats even worse!
DrewPetitclerc wrote:If a shop began to "MASS" produce them then the cost can come down but that is not what is going on here. :roll:
A design once established and replicable by versatile / non-specialised tools is still technically mass production.
DrewPetitclerc wrote:But good luck with producing your own, some have been marginally successful and I hope you will be too. ;)
Thanks - I'll let you know :)
Out of interest, who has been marginally successful and how do their results differ from yours?
Go ahead and ask a machine shop to make one (1) for you and then come back in a couple of months and ask for one (1) again, the price is not going to change significantly even though they may still have the code to CNC one, but ask them to make several thousand in one order and the price can get real cheap, you can go ahead and invest in that business. :D

As to who has been making their own, try reading the forum a bit and I'm sure you will see, too many people don't read the posts and try to find help for themselves. :geek:
So many want answers to their questions but instead of taking the time to do some research like I did they start a new post and then say "I'm sure this has been asked before". :cry:
Drew Petitclerc
Petitclerc Designs
Owner/Senior Principal Designer, prototype, tooling and test equipment design and 3D printing
http://flash-graphics.deviantart.com/
http://www.thingiverse.com/DrewPetitclerc

doraemon
Posts: 94
Joined: Wed Sep 19, 2012 3:37 am

Re: Improvements I've made in the last year

Post by doraemon » Wed Sep 19, 2012 3:55 am

Wolfy wrote:The extruder mount is particularly intriguing although I think the quoted price for it is laughable. Is this really what companies pay eachother for little mass-produced bits of metal?
Pretty much. I think the current going rate for CNC time in the US is anywhere from $120 to $150/hr. Once the program is written, then the cost of making the part comes down to machine time. But the cost of the time to write the program (and make any custom fixtures or setups) has to be amortized across however many parts you make. In looking at these relatively small parts, which are cut using small diameter cutters that you can't feed too quickly lest they snap, you need several setups to machine all the portions of the part. That all adds up to shop time.

I've actually made a couple sets of these parts as part of a project to learn how to write G-code. IIRC, the mount needed to be setup 5 different times in the mill to cut the various features, not counting tool changes.

Now as for making these parts cheaply, I'd say something die-cast or maybe even forged would work. For that, you better be looking at several thousand parts to make it cost-effective, though. :D

Wolfy
Posts: 85
Joined: Wed Jun 01, 2011 3:29 am
Location: Scotland

Re: Improvements I've made in the last year

Post by Wolfy » Wed Sep 19, 2012 5:15 am

DrewPetitclerc wrote:Go ahead and ask a machine shop to make one (1) for you and then come back in a couple of months and ask for one (1) again, the price is not going to change significantly even though they may still have the code to CNC one, but ask them to make several thousand in one order and the price can get real cheap, you can go ahead and invest in that business. :D

As to who has been making their own, try reading the forum a bit and I'm sure you will see, too many people don't read the posts and try to find help for themselves. :geek:
So many want answers to their questions but instead of taking the time to do some research like I did they start a new post and then say "I'm sure this has been asked before". :cry:
I have no intention of asking any 3rd party to make anything. I take my own approaches to problems, and I read and evaluate things and speak my mind as I see them. Incidentally I havent thanked you for drawing my attention to this particular issue so thankyou, but dont take things personally when I happen to disagree with a certain way of doing things, whether its standard practice or not (especially if its standard practice)

User avatar
JuliaDee
Posts: 959
Joined: Sun May 06, 2012 10:00 pm
Location: Connecticut
Contact:

Re: Improvements I've made in the last year

Post by JuliaDee » Wed Sep 19, 2012 10:48 am

Somewhere on this forum (not sure if it's in this thread or another) there are reports of people having had Drew's parts made by Shapeways in stainless and/or alumide. My instinct tells me that the extruder bracket is probably fine done this way and IIRC the Shapeways cost was US$35. One user also states that he's made the feed mechanism this way with success but of course it won't be a complete kit like Drew's - you'll have to make your own dowel pins, find your own spring plunger, etc. $250 is a bit tough to part with initially but I don't regret for a moment having spent it for the feed mechanism - I simply don't have to worry about feed slippage with any filament of any material from any supplier anymore.

julia

Wolfy
Posts: 85
Joined: Wed Jun 01, 2011 3:29 am
Location: Scotland

Re: Improvements I've made in the last year

Post by Wolfy » Wed Sep 19, 2012 1:23 pm

Just to highlight what a crazy bastard I am, my current projects include building a Z80-based computer from scratch (I have no interest in common microcontrollers or any of that arduino crap), which I will use to build a CNC machine among other things, eventually reaching the point where I design and build my own 3D printer 8-) :ugeek:

eyUP
Posts: 230
Joined: Thu May 24, 2012 3:23 pm

Re: Improvements I've made in the last year

Post by eyUP » Wed Sep 19, 2012 1:37 pm

building a Z80-based computer from scratch
Ahh..that brings back memories :D My Dad and I building a Nascom 1 from a bag of bits then typing machine code for hours in order to play Space Invaders on a B&W TV
However, I've got to say that if I were you, I'd much rather buy an Arduino, upload some reprap firmware and concentrate on writing a cool host for slicing and printing ;)

User avatar
woofy
Posts: 118
Joined: Thu Mar 15, 2012 8:09 pm

Re: Improvements I've made in the last year

Post by woofy » Wed Sep 19, 2012 4:31 pm

eyUP wrote:
building a Z80-based computer from scratch
Ahh..that brings back memories :D My Dad and I building a Nascom 1 from a bag of bits then typing machine code for hours in order to play Space Invaders on a B&W TV
However, I've got to say that if I were you, I'd much rather buy an Arduino, upload some reprap firmware and concentrate on writing a cool host for slicing and printing ;)
Wow! Nascom 1, that's a blast from the past. I had one of the 1st of them, modified an old tv to use as a monitor so I didn't have to use that awfull UHF modulator (My day job at the time was repairing tv sets). Even wrote a driver to use a Creed 7B as a printer.

I wouldn't use a Z80 these days though, I'd be looking for a much better processor that had pretty much everything built in. I'm a PIC guy currently but do keep looking over the fence at ARM's and AVR's.
Technobabble mode off - back to printing.
UP plus, Ultimaker2 & Raise N2+ Printers.

User avatar
wilsonj
Posts: 569
Joined: Tue Feb 28, 2012 10:26 pm
Location: Australia

Re: Improvements I've made in the last year

Post by wilsonj » Wed Sep 19, 2012 8:04 pm

Just a tip.

I replaced the extruder bracket with a piece of 3mm angled aluminium. Just cut to size and drill. It doesn't have the third mounting tab, but that doesn't seem to be needed. Cost about $5, and probably 90% as good.
Regards
Jamie
3DPrinterGear.com.au

Wolfy
Posts: 85
Joined: Wed Jun 01, 2011 3:29 am
Location: Scotland

Re: Improvements I've made in the last year

Post by Wolfy » Thu Sep 20, 2012 3:20 pm

While we're on the subject, another obvious improvement thats needed there is an extra hole (which would also require modification to the extruder head). The weight of that part being shifted from side to side translates into torque at the single screw where its fastened - as I found with my very first print because I hadnt tightened it enough. Although it doesnt seem to give many problems once secured it is still a really glaring design flaw.

eyUP
Posts: 230
Joined: Thu May 24, 2012 3:23 pm

Re: Improvements I've made in the last year

Post by eyUP » Fri Sep 21, 2012 8:22 am

another obvious improvement thats needed there is an extra hole
Agreed...or a recess/shoulder just to stop it turning

User avatar
DrewPetitclerc
Posts: 581
Joined: Sat Feb 12, 2011 7:39 am
Location: Silicon Valley California
Contact:

Re: Improvements I've made in the last year

Post by DrewPetitclerc » Fri Sep 21, 2012 4:39 pm

Look at my design for the mount, you will see I addressed that issue with the limited design I had to work with (single M4 screw).
Drew Petitclerc
Petitclerc Designs
Owner/Senior Principal Designer, prototype, tooling and test equipment design and 3D printing
http://flash-graphics.deviantart.com/
http://www.thingiverse.com/DrewPetitclerc

Wolfy
Posts: 85
Joined: Wed Jun 01, 2011 3:29 am
Location: Scotland

Re: Improvements I've made in the last year

Post by Wolfy » Sat Sep 22, 2012 2:56 pm

I came across a site that might be of interest: 3D printing of metal designs for less than it would cost for a machined version. I've made a new topic for it.

forbinone
Posts: 19
Joined: Wed Sep 26, 2012 9:32 am
Location: UK

Re: Improvements I've made in the last year

Post by forbinone » Mon Oct 01, 2012 7:53 am

Has anyone tried the Gekko printer table on EBAY it is supposed to guarantee no curled prints. ????

Post Reply