Matronics Email Lists :: View topic - making large holes in UHMWPE

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

making large holes in UHMWPE

Matronics Email Lists Forum Index -> Zenith-List

View previous topic :: View next topic

Author Message

carlossa52(at)gmail.com
Guest

Posted: Fri Sep 18, 2009 4:12 pm Post subject: making large holes in UHMWPE

I am trying to figure how to make a 1.125" hole in a piece of UHMWPE.

I want it to be snug, as it will be the rear bearing for the torque tube 6V13-3.



In aluminum, I drill small holes around the perimeter, remove the centre piece and file until I have the proper dimension.

 However, UHMWPE is hard to sand or file. There must be a better way.

A 1.125" whole saw will probably result in an oversize hole, and a with 1" one I still have the problem of enlarging the hole...



Any ideas? 

 



Thanks in advance for your comments...



Carlos

CH601-HD, plans

working on centre wing

  [quote][b]

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

Jeyoung65(at)aol.com
Guest

Posted: Fri Sep 18, 2009 4:21 pm Post subject: making large holes in UHMWPE

Try a circular hole cutter (Spruce P/N 12-10600). You can adjust the hole  size. Jerry of GA    DO NOT ARCHIVE

  

  In a message dated 9/18/2009 7:12:43 P.M. Eastern Standard Time,  carlossa52(at)gmail.com writes:

  	  Quote: 	
		  I am    trying to figure how to make a 1.125" hole in a piece of UHMWPE.

I want it    to be snug, as it will be the rear bearing for the torque tube    6V13-3.



In aluminum, I drill small holes around the perimeter, remove    the centre piece and file until I have the proper dimension.

However,    UHMWPE is hard to sand or file. There must be a better way.

A 1.125" whole    saw will probably result in an oversize hole, and a with 1" one I still have    the problem of enlarging the hole...



Any ideas? 

Thanks in    advance for your comments...



Carlos

CH601-HD, plans

working on    centre wing

 	  Quote: 	
		  



====================================

 href="http://www.matronics.com/Navigator?Zenith-List">http://www.matron====================================

ms.matronics.com/">http://forums.matronics.com

====================================

tp://www.matronics.com/contribution">http://www.matronics.com/contribution

====================================



	
	


  [quote][b]

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

carlossa52(at)gmail.com
Guest

Posted: Fri Sep 18, 2009 4:32 pm Post subject: making large holes in UHMWPE

I have a hole cutter, but the smallest diameter it will cut is 1.75"  



AS&S is certainly a good idea, and not expensive! Thanks, Jerry!

Carlos



2009/9/18  <Jeyoung65(at)aol.com (Jeyoung65(at)aol.com)>

 [quote]     Try a circular hole cutter (Spruce P/N 12-10600). You can adjust the hole  size. Jerry of GA    DO NOT ARCHIVE

 

[b]

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

psm(at)att.net
Guest

Posted: Fri Sep 18, 2009 4:43 pm Post subject: making large holes in UHMWPE

Hi Carlos,



I would probably start a hole in the middle or near the edge of the 

marked outline of my finished hole.  Then I would use a bench mounted 

scroll saw to cut close to the outline.  For a final finish on the 

hole I would probably use a rotating sanding drum mounted in a 

Dremel, hand drill, or drill press.



Paul

XL awaiting engineering changes

At 05:11 PM 9/18/2009, you wrote:

 	  Quote: 	
		  I am trying to figure how to make a 1.125" hole in a piece of UHMWPE.

I want it to be snug, as it will be the rear bearing for the torque 

tube 6V13-3.



In aluminum, I drill small holes around the perimeter, remove the 

centre piece and file until I have the proper dimension.

However, UHMWPE is hard to sand or file. There must be a better way.

A 1.125" whole saw will probably result in an oversize hole, and a 

with 1" one I still have the problem of enlarging the hole...



Any ideas?

Thanks in advance for your comments...



Carlos

CH601-HD, plans

working on centre wing

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

ashleyw(at)gvtc.com
Guest

Posted: Fri Sep 18, 2009 4:50 pm Post subject: making large holes in UHMWPE

How about a Harbor Freight Unibit?

  

 Floyd Wilkes

  

 [quote]   ---

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

larry(at)macsmachine.com
Guest

Posted: Fri Sep 18, 2009 4:52 pm Post subject: making large holes in UHMWPE

Carlos,

I cut the stuff on a lathe and get rather precise holes. Any lathe would 

do and

save you considerable time. Otherwise, a fly-cutter will do the same 

accuracy as well.

Just cut a sample hole first.



Larry McFarland 601HDS at www.macsmachine.com

Carlos Sa wrote:



 	  Quote: 	
		   I am trying to figure how to make a 1.125" hole in a piece of UHMWPE.

 I want it to be snug, as it will be the rear bearing for the torque 

 tube 6V13-3.



 In aluminum, I drill small holes around the perimeter, remove the 

 centre piece and file until I have the proper dimension.

 However, UHMWPE is hard to sand or file. There must be a better way.

 A 1.125" whole saw will probably result in an oversize hole, and a 

 with 1" one I still have the problem of enlarging the hole...



 Any ideas?

 Thanks in advance for your comments...



 Carlos

 CH601-HD, plans

 working on centre wing

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

macstar(at)clear.net.nz
Guest

Posted: Sat Sep 19, 2009 12:43 am Post subject: making large holes in UHMWPE

I have used a standard hole say with good results.  

I found it best to measure up the hole saw with callipers first The published size is usually not very accurate.   

Cut a test hole first as a final test.   

   

Ian McClelland  

New   Zealand  

   

601XL  

80% done. Finishing off the canopy.   

   

       [quote][b]

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

naumuk(at)windstream.net
Guest

Posted: Sat Sep 19, 2009 7:07 am Post subject: making large holes in UHMWPE

Carlos-

     Fly cutter. HF #P37370 cut all  the holes that were an oddball size or had to be dead-nuts on in my project for  less than $10 US. One observation- replace the setscrews with machinist's  grade before you use it- the originals aren't hard enough and the hex  socket will strip out.  This will set you back another $.50 but you wind up  with a competent tool that won't make your wallet scream. With any fly  cutter, make practice holes/adjustments until you get exactly the diameter  you're shooting for.

                                                                                          Bill 

 [quote]   ---

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

carlossa52(at)gmail.com
Guest

Posted: Sat Sep 19, 2009 11:18 am Post subject: making large holes in UHMWPE

Thanks all for the input!



Looks like the best bang for the buck is the fly cutter - I already own one, but it doesn't cut holes that small, so I ordered one that will.



Have a good weekend

Carlos

  CH601-HD, plans

do not archive

[quote]  [quote]   ---

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Zenith-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum