Plastic Blank Blocks - The 1947 - Present Chevrolet & GMC Truck Message Board Network

lts70 · 07-08-2009, 11:00 AM

A friend of mine purchased a small CNC machine that can cut materials that are up to 4" thick. I want to make some things for my 70 Chevy out of black plastic. Does anyone know where I can get some Black Plastic Blank Blocks? If I had more money I would do it out of Billet blanks but I would think plastic would be a lot cheaper. And I am not sure his machine could handle metal, I will have to ask him. Thanks

vectorit · 07-08-2009, 11:51 AM

Have you checked out your local recycling yard? The place you take all your beer & soda cans... The one where I live has all kinds of scrap material of all kinds. They have it all racked, or sorted so finding a size and shape is easy.

With the scrap mkt down so low you could pick up some chunks of alluminum, brass, or whatever looks cool pretty cheap.

As for chunks of plastic, I would almost see that as more of a pain to find. Since it would be more of a specialty material, where as brass, alluminum, or other alloys can be found pretty easy.

Good luck!

OLDIRON69 · 07-08-2009, 11:52 AM

You can buy black sheets of polycarbonate thru www.mscdirect.com

It's on pg. 1802 if you have a catalog.

lts70 · 07-08-2009, 12:00 PM

Thanks guys. I am looking for a chunk that is roughly 13" X 4" X 6".

71tahoe · 07-08-2009, 01:26 PM

You could try some cabinet shops. Corain that's cut out for a sink could be laminated to that size and should mill/turn real nicely.

beautimus · 07-08-2009, 04:02 PM

try mcmaster-carr, and you could try EVIL BAY, search by plastic types like delrin, poly carbonate, pvc, etc.
good luck

**Classic Heartbeat** · 07-08-2009, 07:13 PM

Are you going to pollish the part after it has been milled? If so, most plastic does not lend itself to pollishing. You put a buffer to it and it melts from the friction. Also what kind of flexability are you looking for? Flexable plastics generaly have lower melting temps so do not pollish, while harder plastics can be buffed carefuly, but are not verry flexable. WES

PanelDeland · 07-08-2009, 07:25 PM

You might also try a Machine Shop supply.They usually carry some stuff for machine shops to use for soft fixtures and such.

67c-10Texas · 07-09-2009, 09:05 AM

we use msc and mcmaster carr to buy our plastic. gray PVC machines well and, use flood coolant and finish passes with .01 to .02 will leave a great finish

rambler · 07-09-2009, 01:09 PM

cant answer your question, but very interested in seeing what you have in mind and when its done...

maddog1331 · 07-09-2009, 01:16 PM

Same here, I am interested in what you make too. Who knows, you might find yourself in a second career!

**LockDoc** · 07-09-2009, 07:10 PM

-
This should get you started in the right direction...

http://www.americanmachinist.com/304...se/18257/Issue

http://www.plasticsmachining.com/mag...01-11/Van.html

http://www.plastic-products.com/

http://www.boedeker.com/fabtip.htm

LockDoc

07-08-2009, 11:00 AM	#1
lts70 1970 Daily Driver Join Date: Jun 2007 Location: Glenns Ferry IDAHO Posts: 1,037	Plastic Blank Blocks A friend of mine purchased a small CNC machine that can cut materials that are up to 4" thick. I want to make some things for my 70 Chevy out of black plastic. Does anyone know where I can get some Black Plastic Blank Blocks? If I had more money I would do it out of Billet blanks but I would think plastic would be a lot cheaper. And I am not sure his machine could handle metal, I will have to ask him. Thanks __________________ It's not truly yours if you didn't build it yourself or if you don't do your own maintenance.

07-08-2009, 11:51 AM	#2
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: Plastic Blank Blocks Have you checked out your local recycling yard? The place you take all your beer & soda cans... The one where I live has all kinds of scrap material of all kinds. They have it all racked, or sorted so finding a size and shape is easy. With the scrap mkt down so low you could pick up some chunks of alluminum, brass, or whatever looks cool pretty cheap. As for chunks of plastic, I would almost see that as more of a pain to find. Since it would be more of a specialty material, where as brass, alluminum, or other alloys can be found pretty easy. Good luck! __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU

07-08-2009, 11:52 AM	#3
OLDIRON69 Registered User Join Date: Mar 2007 Location: Ben Wheeler,Texas Posts: 992	Re: Plastic Blank Blocks You can buy black sheets of polycarbonate thru www.mscdirect.com It's on pg. 1802 if you have a catalog. __________________ 05 2500HD 6.0 excab 69 LWB-Gone but not forgotten! 68 Dodge Charger 383/727 69 Dodge Charger-440/4spd

07-08-2009, 12:00 PM	#4
lts70 1970 Daily Driver Join Date: Jun 2007 Location: Glenns Ferry IDAHO Posts: 1,037	Re: Plastic Blank Blocks Thanks guys. I am looking for a chunk that is roughly 13" X 4" X 6". __________________ It's not truly yours if you didn't build it yourself or if you don't do your own maintenance.

07-08-2009, 01:26 PM	#5
71tahoe Registered User Join Date: May 2006 Location: Jonesboro, AR Posts: 916	Re: Plastic Blank Blocks You could try some cabinet shops. Corain that's cut out for a sink could be laminated to that size and should mill/turn real nicely.

07-08-2009, 04:02 PM	#6
beautimus Registered User Join Date: Mar 2002 Location: woodstock, alabama, usa Posts: 938	Re: Plastic Blank Blocks try mcmaster-carr, and you could try EVIL BAY, search by plastic types like delrin, poly carbonate, pvc, etc. good luck __________________ i survived cancer and kidney stones, but my kids are killing me.

07-08-2009, 07:13 PM	#7
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,770	Re: Plastic Blank Blocks Are you going to pollish the part after it has been milled? If so, most plastic does not lend itself to pollishing. You put a buffer to it and it melts from the friction. Also what kind of flexability are you looking for? Flexable plastics generaly have lower melting temps so do not pollish, while harder plastics can be buffed carefuly, but are not verry flexable. WES __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

07-08-2009, 07:25 PM	#8
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Re: Plastic Blank Blocks You might also try a Machine Shop supply.They usually carry some stuff for machine shops to use for soft fixtures and such. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

07-09-2009, 09:05 AM	#9
67c-10Texas Registered User Join Date: Apr 2006 Location: Texas Posts: 259	Re: Plastic Blank Blocks we use msc and mcmaster carr to buy our plastic. gray PVC machines well and, use flood coolant and finish passes with .01 to .02 will leave a great finish

07-09-2009, 01:09 PM	#10
rambler MOVE OVER Join Date: Jun 2002 Location: Warrensburg, MO Posts: 5,470	Re: Plastic Blank Blocks cant answer your question, but very interested in seeing what you have in mind and when its done... __________________ No matter where you are..... There you are... Buckaroo Banzi

07-09-2009, 01:16 PM	#11
maddog1331 Registered User Join Date: Feb 2009 Location: Somerset, KY Posts: 398	Re: Plastic Blank Blocks Same here, I am interested in what you make too. Who knows, you might find yourself in a second career!

07-09-2009, 07:10 PM	#12
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,479	Re: Plastic Blank Blocks - This should get you started in the right direction... http://www.americanmachinist.com/304...se/18257/Issue http://www.plasticsmachining.com/mag...01-11/Van.html http://www.plastic-products.com/ http://www.boedeker.com/fabtip.htm LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - Last edited by LockDoc; 07-09-2009 at 07:26 PM.



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