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saF
Joined: 08 Jan 2005
Posts: 52
Location: Cornwall, Prince Edward Island, Canada
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 Posted: Sun Mar 13, 2005 2:09 pm Post subject: Offset gauges for marking your seam allowances |
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Bill and I are cutting out the pieces for our Flow Forms and cursing about marking the 1/4" seam allowance on the curved edges of the ribs/end panels. I mentioned that I was planning to get some
Veritas® Offset Wheel Gauges from Lee Valley the next tme I was there. They are some nice brass (I think) washers for allowances of 1/4" up to 1" in size.
Bill's response was  "What, they have those!?" 
And then he suggested that I post the link since others were griping about adding seam allowances too.
Lee Valley, Man I love that place.  I love it when the catalogs arrive from there. My wife sometimes hides them if she sees them first and wants me to get some supposedly "more important" things done first! 
saF
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Scott Ferguson
Cornwall, Prince Edward Island
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mhartzel
Joined: 09 Dec 2003
Posts: 552
Location: USA, Michigan, Fraser
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| Posted: Sun Mar 13, 2005 2:18 pm Post subject: |
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for marking my seam allowances I use a flat washer that has the correct distance between the OD and ID. Then use my sharpie on the inside of the washer.
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Mark
Sand, Street or Sky... I love to fly.
 - Take back the web. |
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saF
Joined: 08 Jan 2005
Posts: 52
Location: Cornwall, Prince Edward Island, Canada
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| Posted: Sun Mar 13, 2005 8:11 pm Post subject: |
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| mhartzel wrote: | | for marking my seam allowances I use a flat washer that has the correct distance between the OD and ID. Then use my sharpie on the inside of the washer. |
Yeah but if the ID is bigger than say an 1/8", then you can have your sharpie or pencil or whatever moving around a bit making the line not as smooth. The gauges are really just good washers with accurate sizing and a narrow ID.
I guess it just depends how anal you are about it! Hmm  I am talking about myself here..... 
saF
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Scott Ferguson
Cornwall, Prince Edward Island
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KiteSquid
Master Kite Builder
Joined: 29 Aug 2003
Posts: 3474
Location: USA Virginia King George
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| Posted: Mon Mar 14, 2005 9:02 am Post subject: |
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David Pellam talked about offset wheel gaguge in two of his books.
He sujested using Teflon to make them out of.
Also to have a lip on them so they will not jump off the pattern.... a mistake with a pencil is erasable... a mistake with a hot knife is usualy bad news..
I assume because metals take quite a bit of heat away from your hot knife.
The only drawback I can see for this set is I only want the 1/4 and 3/8" sizes.......... they dont sell them sepertaly. I may just buy a set as they are only $10 and I can get some other stuff from them at the same time..... just to save on shipping...
I will see if I can locate some metal disks and drill them on the drill press...
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KiteSquid
AKA TakoIka
AKA Harold
King George VA
P.S. Yet another post by the Squid..... Doesent he ever shut up???
P.P.S. The wind is like the air, only pushier. |
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mhartzel
Joined: 09 Dec 2003
Posts: 552
Location: USA, Michigan, Fraser
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| Posted: Mon Mar 14, 2005 9:56 am Post subject: |
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http://www.machinist-materials.com/default.htm
I have used this site to purchase Delrin before. They do carry teflon. The stock they have is limited to overruns, overstock, oddball orders... Check their eBay listings.
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Mark
Sand, Street or Sky... I love to fly.
- Take back the web. |
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Grant L
Kite of the Year 2004
Joined: 15 Sep 2003
Posts: 737
Location: USA IN Indianapolis
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| Posted: Mon Mar 14, 2005 10:09 am Post subject: |
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I don't remeber where it is, but I remeber a post quite a while ago where someone was experimenting with washers. I think that they finally ended up using a large, very thin washer glued/fastened to the bottom of a washer that provided the right amount of offset. The thinner washer ran beneath the template to keep the offset guage from jumping over the template.  |
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Progcraft
Kitebuilder of the Year 2004
Joined: 29 Sep 2003
Posts: 2541
Location: Calgary, AB, Canada
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| Posted: Mon Mar 14, 2005 10:25 am Post subject: |
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| Grant L wrote: | | I don't remeber where it is, but I remeber a post quite a while ago where someone was experimenting with washers. I think that they finally ended up using a large, very thin washer glued/fastened to the bottom of a washer that provided the right amount of offset. The thinner washer ran beneath the template to keep the offset guage from jumping over the template. |
Dig around in here and you'll find what your referring to. I only used that setup a few times before the heat for the hot-cutter loosened the double sided tape and the thing fell apart on me. I'd still like a nice teflon cutting whell though. But I've been getting by 
P.
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