10-13-2010, 06:08 PM | #1 |
Quarry Creeper Join Date: Apr 2004 Location: west sacramento
Posts: 217
| delrin vs aluminum $$$
I bought a lathe and wanted to try making a set of wheels. thought i would start with delrin because of cost! haha yeah right!!! 4" delrin rod is $50+ft and 4" alum rod is $60+ft. so I still might start with delrin as soon as i get some tools for the lathe. thinking about a simple dish type wheel maybe drill some holes in them. not sure yet still have a ways to go to finish my basement project. |
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10-13-2010, 06:13 PM | #2 |
RCC Addict Join Date: Oct 2009 Location: San Francisco
Posts: 1,927
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Depends who you get the Delrin from. I got lucky and found some alumnum blocks from my machine shop teacher and got busy . For you if you have a 4-jaw chuck, just get the block "roughly centered" and go from there. I think it sounds like a cool project, just remember that both aluminum and Delrin produce long, nasty, stringy chips so Stop the feed for a sec to break them and they won't get wrapped all over the work. Few quick tips: Delrin machines a lot like aluminum, just keep a nice air feed on it to keep it from melting and to keep the chips at bay and life's cool! Aluminum *LOVES*: Kerosene (be careful naturally) Charcoal lighter fluid (same story) Marvel Mystery Oil WD-40 or any thin oil that smears well, gives a much better surface finish and prevents the aluminum from "galling" and sticking to itself or the tools (never ends well!) Other than that, POST PICS when done |
10-13-2010, 07:00 PM | #3 |
Quarry Creeper Join Date: Apr 2004 Location: west sacramento
Posts: 217
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thats why i want rod I only have a 3jaw at the moment :( thanx for the tips I'll need them I have played with it for about 10min.I dug out an old after market shifter handle and stuck it in there.I cant wait to get some real time on this thing. |
10-13-2010, 08:33 PM | #4 |
Rock Crawler Join Date: Jun 2010 Location: SENECA
Posts: 811
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It's still cheaper than the carbon fiber I want. Or titanium
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10-13-2010, 10:20 PM | #5 |
RCC Addict Join Date: Oct 2009 Location: San Francisco
Posts: 1,927
| Ok gotcha, yeah well I just made do with what I had on the mill I say just take it slow and maybe learn on wood first, its a lot easier to work with and you will learn things good. Just remember to NOT crash the machine since it never ends well |
10-13-2010, 11:30 PM | #6 |
Quarry Creeper Join Date: Jan 2009 Location: Langley, BC, Canada
Posts: 297
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Get yourself a couple of carbide tools. And get a good, sharp carbide insert, specific for aluminum. Any aluminum insert will work fine for delrin as well. As for being stringy, delrin is, but aluminum should chip well. If it isn't, you are most likely not taking a deep enough cut, and/or not pushing it hard enough. It should chip in "C" or "6" shapes. I am currently working on my own sets of wheels too. It's a fun project, but I get to cheat and use CNC machines. Make sure you post pics as you go. It'll be cool to see what you come up with. Oh, and unless you are making wheels for a super, you should be able to use as small as 2.5" bar. Check this out, it should be plenty: http://cgi.ebay.com/1-piece-aluminum...item45f5f27b45 Last edited by Mayze; 10-13-2010 at 11:33 PM. |
10-14-2010, 05:10 AM | #7 |
Quarry Creeper Join Date: Apr 2005 Location: Malaysia
Posts: 374
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Sounds like you're making some Supers. Did you end up getting that combo machine? Post up pics if you have time. I wouldn't mind learning a trick or two before I cut my wheels too.
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10-14-2010, 05:23 AM | #8 | ||
Quarry Creeper Join Date: Apr 2004 Location: west sacramento
Posts: 217
| yeah i was talking about titanium last night with my brother. not high on my list at the moment hahaha Quote:
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not yet still trying to sell this lathe. didnt think it would take this long. plus I've been doing alot of reading and almost everyone says to buy seperate machines.but money is a factor for me.I dont have the cash to drop $1k on a cheap mill with tools.we will see how it plays out | ||
10-14-2010, 07:15 AM | #9 |
No idea what I'm doing Join Date: Oct 2008 Location: Underground, CO
Posts: 4,529
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Where are you buying your aluminum from? It says your location is Westminster....is that CO?
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10-14-2010, 07:58 AM | #10 |
Quarry Creeper Join Date: Apr 2005 Location: Malaysia
Posts: 374
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Good thinking to use the Prazi to make the lathe cuts before you swap it with the combo. Hope it all works out. I've got some flimsy machines (Sherlines) so I always prefer Delrin. I work so slow with anything else that it's painful to make mistakes.
Last edited by sim; 10-14-2010 at 08:06 AM. |
10-14-2010, 10:55 AM | #11 |
RCC Addict Join Date: Oct 2009 Location: San Francisco
Posts: 1,927
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"crash" I mean by like the tool smashing into the chuck or the jaws In general "crash" means something didn't go right and 2 things that weren't supposed to meet... did |
10-14-2010, 06:08 PM | #12 | ||
Quarry Creeper Join Date: Apr 2004 Location: west sacramento
Posts: 217
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thats what I thought just wanted to make sure | ||
10-14-2010, 08:00 PM | #13 |
RCC Addict Join Date: Oct 2009 Location: San Francisco
Posts: 1,927
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No problem, i hate it when people crash stuff since it never ends well so that's all . Just wondering how your going to get the holes drilled for mounting the locking rings |
10-14-2010, 08:09 PM | #14 | |
Quarry Creeper Join Date: Apr 2004 Location: west sacramento
Posts: 217
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sound ok? | |
10-14-2010, 09:38 PM | #15 |
RCC Addict Join Date: Oct 2009 Location: San Francisco
Posts: 1,927
| Sounds cool, I made my rims up (almost entirely) on a CNC mill so that's all. Only lathe operation was to turn the excess square metal off... |
10-15-2010, 05:13 AM | #16 |
Quarry Creeper Join Date: Apr 2004 Location: west sacramento
Posts: 217
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10-15-2010, 05:21 PM | #17 |
RCC Addict Join Date: Oct 2009 Location: San Francisco
Posts: 1,927
| Sure, here's the rim in a "custom holder" (yea its just a block of aluminum with 2 holes on the bottom and 2 screws that go into the bottom of the rim to hold it in place for tapping...) The only lathe part was to spin the blocks down. Even then "in theory" I could have done it in the mill but I did the holes clean through the rim (bad idea when I CNC tapped them) but yeah. I think making rims can either be a full mill, full lathe, or parts of either part. Depends what you got on hand |
10-15-2010, 07:33 PM | #18 | |
Quarry Creeper Join Date: Apr 2004 Location: west sacramento
Posts: 217
| Quote:
how can i do the hex's on a lathe? dont i need a mill for those? | |
10-16-2010, 12:54 AM | #19 |
RCC Addict Join Date: Oct 2009 Location: San Francisco
Posts: 1,927
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Your going to need either a mill. There's 2 ways to do it: Use a 5C collet holder and mill it out one side at a time. You would still need to drill clearance holes on the side AND drill the center out as big as possible use a CNC mill to do the job real quick "program it up and watch er rip" I am going to make the hex for my rims as soon as I can get my hands on my taps so I will try and make a little step by step process for that if you need help. It can be done its just like everything else, it takes a little patience and time |
10-16-2010, 01:11 PM | #20 | |
Quarry Creeper Join Date: Apr 2004 Location: west sacramento
Posts: 217
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