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JamesB
Unregistered
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Posted Sunday, January 6, 2008 @ 11:10 AM
I have purchased a used set of canopies & frames for my RF5B. In the next week or two, will remove the canopies (not airworthy) from the frames & send them to Thermotec in CA. Although the canopies are broken around some of the edges, I hope they are in good enough condition to be used for moulds to make new ones. Will post an update as soon as I know.
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joethepro
Unregistered
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Posted Wednesday, February 6, 2008 @ 07:44 PM
i too need a r4d canopy maybe 2 need to ck my flying one i also would enjoy a little extra headset room
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Bob Grimstead
Unregistered
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Posted Monday, February 25, 2008 @ 03:45 AM
Hello James,
I too need an RF4D canopy. I bought an old one from my good friend Matthew Hill and borught it out all the way from England to Australia, to replace my recently cracked one, only to find it has poor optical quality.
I hope to come to visit the Pacific northwest this summer, maybe I could pick it up when I am there?
If they are not too expensive, I would buy two. It is always useful to have a spare one, they are so easily cracked.
Yours, Bob
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JamesB
Unregistered
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Posted Sunday, March 30, 2008 @ 01:51 PM
Update --
Through Colin, I found a set of used canopies & frames. I sent the canopies to Thermotec in Grass Valley, CA. Ray Poquette of Thermotec said that the canopies were in good enough condition to make molds from. http://home.inreach.com/thermotc/
Ray predicts the molds will be ready by the end of May. Apparently the canopies can be made clear or tinted, with or without a UV filter, with window openings, etc.
The molds should be useful for other models of Fournier as well.
So, shortly, we should have a(nother) U.S. source.
[Edit by JamesB on Sunday, March 30, 2008 @ 01:52 PM]
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Bob Grimstead
Unregistered
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Posted Monday, March 31, 2008 @ 00:46 AM
Good news James,
Count me in for an RF4 canopy when you get them done.
Yours, Bob
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JamesB
Unregistered
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Posted Monday, March 31, 2008 @ 01:17 AM
| Quote: |  | | Originally posted by Bob Grimstead
Good news James,
Count me in for an RF4 canopy when you get them done.
Yours, Bob
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Do note, it is important to contact Ray (the owner) at Thermotec directly for any order.
I have no relationship with them and cannot place orders for other people. They do have a contact email on their website.
I have nothing personal to gain from any orders....although it can't hurt if he thinks there is interest beyond my individual order. I am assuming, based on recommendation of others, that their work is high quality. But I am not expecting canopies from them until the end of May. I will be glad to update this thread about price(s) I paid, apparent quality of what I received, etc., at that time.
The only thing to consider is that if you live in the Pacific NW or want to pick up a canopy up here, if we share shipping from California, that would reduce the overall cost.
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Sam M.
Unregistered
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Posted Sunday, April 20, 2008 @ 01:53 AM
I am also looking for a rf4d canopy, our project came with one but it has a very large crack.
We were going to contact LP aero down in lancaster Ca and have them make one. ill keep you guys posted.
Sam Mason
N1700F
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Sam M.
Unregistered
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Posted Tuesday, July 1, 2008 @ 02:24 AM
Hey guys,
any news on Todds canopys yet?
with our rf4 on the verge of flight were getting a little anxious for a new canopy.
are canopy is airworthy, but has multiple cracks safty wired shut. not pretty.
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Collin
Unregistered
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Posted Tuesday, July 1, 2008 @ 03:15 PM
Hi,
I have not made a box yet to ship the canopy to Todd's. I will do it soon.
Collin
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JamesB
Unregistered
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Posted Thursday, July 3, 2008 @ 06:44 PM
btw, I checked with Thermotec. Ray made the point that Todd's does free form canopies, commonly called blown canopies.
Ray said, "Most aircraft use molded canopies. The reason for this is the canopy has an elliptical cross section. A freeform canopy produces a circular cross section and assistive thinning at the top of the dome. When attempting to mount this canopy on a canopy frame with a elliptical cross section it can pull the frame out of shape, and is bubbled up and out all around. ...In some cases the canopy will bubble out on the side and be flat on the top as seen in his ASW-20 photo. I could go on and on with all the problems with freeform canopies. Occasionally I still make a freeform canopy if the aircraft was designed for it. This RF5B motorglider is not designed for a freeform canopy, it must be molded to get the same OEM quality!
I do not try to compete with Todd's Canopies. It is two different worlds. I compete with companies like MECAPLEX."
----------------
Note that I am simply passing along the point(s) that Ray made and don't pretend to necessarily support one approach over the other. It does make sense that a canopy that uses a mold will be more precise than a canopy that is blown. How much of a difference this makes, I don't know and might vary from canopy to canopy.
It looks like molded canopies for the RF4 & RF5B will be available from Thermotec sometime in the Fall while the blown canopies from Todd's will be available before then--so it will be interesting to see what the first Fournier customers think of them.
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JamesB
Unregistered
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Posted Sunday, July 19, 2009 @ 11:56 AM
FWIW: Over a year ago, I purchased a set of used canopies & sent them to Thermotec to use to make molds. That is now done. Thermotec can supply canopies for the RF4 & RF5B. These are molded, rather than blown. They come in clear or tinted, with our without UV filter. I am purchasing a set of clear ones with a UV filter, plus windows that can push out to be a scoop for air. For clear with UV filter:
Front canopy: $1600 (usd)
Reary canopy: $1600
Center: $200
Sliding window s/air scoop: $250 each
Shipping container: $150
Shipping (West Coast US): $200
Not cheap, but the last time I priced MECAPLEX, a set was over $12,000. So, in a relative sense, these are a bargain for what is supposed to be equal materials and precision.
Contact Ray at:
TermoTecUSA
14530 Lynshar Rd
Grass Valley, CA 95949-7507
530-272-2556
info@thermotecusa.com
I will be sending off my check next week. Should see them in a couple of weeks after that. Will add reports once I get them.
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Donald
Unregistered
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Posted Sunday, July 26, 2009 @ 04:49 PM
JamesB, any chance you can post a photograph? I would only consider a new one for my RF3 that had the original profile as seen from the side, well, unless I irretrievably broke what I have.
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JamesB
Unregistered
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Posted Sunday, July 26, 2009 @ 10:25 PM
| Quote: |  | | Originally posted by Donald
JamesB, any chance you can post a photograph? I would only consider a new one for my RF3 that had the original profile as seen from the side, well, unless I irretrievably broke what I have.
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I will post photos when I can. In theory, since Thermotec uses a mold, the precision should be high. But, he based his molds on a set of used canopies I sent him. I don't know how precise those canopies are. So, I'm interested to find out how these canopies will look (both in shape and lack of defects).
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Bob Grimstead
Unregistered
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Posted Monday, July 27, 2009 @ 10:24 AM
Hi Guys, Donald,
EIS can supply the original RF4 canopies, but when I last asked for a price, it was around £2,500 including shipping.
For those of you in Europe, Eugenio made a mould for Weiss Plastics (see his earlier post on this site) and their canopies are much cheaper.
I saw Eugenio's Weiss-made canopy at Gap Tallard, and it was optically excellent, and the correct original shape.
He suggests we contact Weiss Plastics direct for a quote, which will of course be lower if more than one canopy is being ordered.
I would definitely like an RF4 canopy myself, but of course at the lowest possible total cost. If they are not too expensive (say, £500 or so apiece) I would buy two, and I suspect Paul Cooper might be in the market for one as well.
I am off to France this week, then to Sweden next week and Norway after that, so I shall be out of touch until September, but if you can get an RF4 canopy into Britain for me to collect at under £1,000 total price, I would definitely wish to buy one.
Yours, Bob
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Donald
Unregistered
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Posted Monday, July 27, 2009 @ 03:58 PM
Thanks, Bob. I did not know EIS could supply the original RF4 canopy but at £2,500 that's more than I can justify. Even if it were €2,500 it would be out of my reach.
I had email contact last year with Alexandra Birnkraut of plexiweiss (Weiss Plastics) and even mentioned that I understood they had Eugenio's mould, but the photograph they sent looked not very much like the original profile so I did not take it any further. There was certainly some confusion because I was initially quoted €715 for the RF4 front canopy and €509 for the rear(?).
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eugenio
Unregistered
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Posted Wednesday, August 5, 2009 @ 11:29 AM
I confirm they did some confusion due to the fact that they have too much sets of moulds done by me and by Patrich Faucheron, so they mixed them and not knowing the fourniers they cannot recognize the right shape.
If anybody is interested I can take contact for you and arrange for the right canopies, but any commercial contact must be done with Alexandra or with Mario (mario.bahlouli@plexiweiss.de)
In any case for any doubts you can have the mould has been done on an original canopy by Starplast.
If you prefere you can also contact them for a price, they are the official suppliers of Spanish produced RF5 and for Alpavia's RF3.
ciao
Eugenio
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Kadir
Unregistered
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Posted Saturday, February 27, 2010 @ 07:00 AM
How thick is the RF5B canopy?
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Kadir
Unregistered
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Posted Monday, July 19, 2010 @ 12:51 PM
I have invested in a set of canopy moulds for RF5B Sperber, although I went the cheap way and having the moulds made out of epoxy/fiber, the mould producer guarantees them for a run of at least 10 sets. The plexiglass guy is an experienced guy with racing car, motorcycle and marine windscreen producer, he has never done any screen for anything that flies, although some of his products are used on vehicles that have considerably more top speed in cruise than RF5Bs Vmo.
My canopies should be ready in 2-3 weeks depending on the mould guys schedule. I will check them for optical clarity, distortion and overall quality. If I think that it is good workmanship and satisfies me, I hope to offer canopies to any interested party at cost.
Kadir
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Kadir
Unregistered
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Posted Wednesday, July 27, 2011 @ 09:31 AM
Hi All,
I have sweated a lot over the new canopy molds for my RF5B over a course of few months, no success
So, I decided to go the "safest way" and ordered both the "original" front and rear canopies at a great expense from Weiss Plastics
of Germany.
In my many mails and telephone calls to them I cautioned them that there seem to be two different canopies on RF5B and I am only
interested in the shape of canopy that I currently have on TC-PDK
I have sent them pictures of my plane alongside pictures of other RF5B which have the same canopy shape of mine.
3 months and umpteen e-mails and telephone conversations later I finally received my new set of canopies.
Wrong shape ofcourse!
What I got from Weiss is, I believe, the different shape as fitted on some European RF5B's such as SE-UDI
Ofcourse because of the way my canopy frame was made "3 pieces" even though I did not like the shape,
my technicians here in Turkey literally "hammered" the new canopies onto my old frame and I ended up with;
Now I have a Sperber with the oddest looking canopies and frankly I am less than pleased with Weiss who
put the blame on me for installing their perfectly molded plexy incorrectly!
Where have I gone wrong?
I intend to replace this ugly looking thing after this summers flying is done. Where can I get an original canopy?
Please help and advise.
Kadir
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Jorgen
Unregistered
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Posted Wednesday, July 27, 2011 @ 12:22 PM
Marhaba Kadir,
sorry to hear you had problems with your canopies. Just glancing quickly on the picture it looks to me almost like you got two front canopies instead of one front and the (different) rear one. I think there could be some confusion with RF 5 molds were the rear ones are quite different from the rear canopy for a RF 5b. I suppose one explanation to the problem could be that the designation code for RF 5 and RF 5b's are much too similar. As you saw, James had rear canopy molds done at:
Contact Ray at:
TermoTecUSA
14530 Lynshar Rd
Grass Valley, CA 95949-7507
530-272-2556
info@thermotecusa.com
but that is in the US and shipping might be a factor to consider and also you need to check what molds they have- maybe your three-piece canopy is more uncommon? I have to say the two-piece canopy on "SE-UDI" is quite satisfactory and I think entry for the rear pilot is perhaps easier.
I think your front canopy looks very nice, so it's only for the rear one you need to find an alternative. I sincerely hope you will get this sorted out, but in the meantime I hope you can get some RF 5b flying done- you've deserved that!
May the 4's be with you/ Jörgen
[Edit by Jorgen on Wednesday, July 27, 2011 @ 12:27 PM]
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eugenio
Unregistered
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Posted Wednesday, July 27, 2011 @ 03:01 PM
If people would read what I post, these things would not happen. You got from Weiss Plastic two front canopies for the RF4/RF3. These glazing works for the RF5B front canopy, but not for the rear one that should be a K13 canopy adapted to fit. The new manager of the czeck plant is an idiot and this is not his first mistake. You should have complained about the delivery BEFORE the installation, not now. Since it is me the mould maker for the Fournier's canopies they produce, I know the background.
Eugenio
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Kadir
Unregistered
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Posted Thursday, July 28, 2011 @ 05:18 AM
Dear Eugenio and Jorgen,
While I was dealing with Weiss, over our many communications with them, I sent them many pictures of my canopy from all angles.
Weiss asured me that they had the correct canopies. You are correct that people will get their fingers burned less if they are to read
every post in the forum in detail but, sometimes we miss things and make expensive mistakes.
Ofcourse in my case sending the wrong canopy back was not an option on 2 counts,
a) I wantted to get TC-PDK up in the air as quickly as I possibly could and having a new rear canopy would mean weeks of extra wait,
even if I was aware that it was the wrong shape .
b) I had already paid transportation and tax at this end which was more than the cost of the canopy itself. Sending the wrong canopy
back would involve even more expense and paperwork.
I strongly believe Weiss should make good on their mistake and if they have the molds for the correct shape rear canopy, send me a
new rear canopy of the correct shape at their expense.
Thanks guys, I appreciate your input
Kadir
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Jorgen
Unregistered
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Posted Thursday, July 28, 2011 @ 08:32 AM
Kadir,
I hope you find a satisfactory solution with Weiss or an alternative. If you look closely at "SE-UDI" you can see the top profile is not entirely straight or convex but with a slight concave angle were the two canopy-halves meet. Maybe not aesthetically pleasing to the eye, but it doesn't really bother me and I suppose some compromise might have to be accepted since canopy making/molding is less of an exact science than we perhaps think. Some adjusting is inevitably involved and your personal preference sets the limits.
Another comment- I can't see if there is a sliding window on your canopy. Some doesn't like the window because cracks might start there. However, in an emergency it is crucial that the canopy can be opened from the outside, as we concluded in another thread. There was a horrible accident at Oshkosh recently were two people in a Piper Cub drowned. Boaters were quick to assist but couldn't open the cockpit from the outside.
I still hope you will get lots of enjoyable flying out of this summer- that's the point of Fournieteering!
May the 4's be with you/ Jörgen
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Kadir
Unregistered
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Posted Thursday, July 28, 2011 @ 09:10 AM
Jörgen,
I am planning on installing the sliding windows, a set of new Weiss cost more than €360 before shipment and tax and the lockable
ones wil cost €500 or more. Does anyone have a better alternative?
P.s. I have just written Weiss another mail asking them to send me the correct canopy. Lets see what happens.
FYI: TC-PDK is now completely finished, waiting for paperwork to come back from Turkish CAA so we can fly
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Jorgen
Unregistered
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Posted Thursday, July 28, 2011 @ 02:51 PM
Kadir,
I would probably visit some glider clubs and see if they had any scrapped canopies lying around, I wouldn't hesitate to re-use the sliding windows. Drilling holes in your new canopies can of course be a little nervous, but with proper tools (slow + wide angle drill; é vero Eugenio?) it shouln't be that hard.
Congratulations on getting another Fournier back were it belongs- in the air! Be sure to bring your camera for the maiden flight so we can share that glorious moment!
May the 4's be with you/ Jörgen
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eugenio
Unregistered
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Posted Thursday, July 28, 2011 @ 03:44 PM
You could have the right canopy from Weiss at no extra cost, if the Czeck plant manager is an Idiot this does not mean that Weiss Plastic is a bad company. We had a similar problem with 3 canopies shipped in England (they shipped 3 RF5 canopies as RF4 ones) and they changed the 3 wrong ones at their own expenses, without any extra charge for the customers.
About the sliding window, yes, you can find something used on the backyard of an hangar or somewhere else and use them, but you can also made it or have it made from someone who works the plexiglass. The rail can be done with a strip of thick plexiglass carved to accept the window. The window can be made with a piece of 4mm plexiglass heated and slightly bent to follow the canopy's shape. And to work on the plexiglass is not so scary, if you have an outside pattern for the window's hole and a high speed router you can do a perfect hole in a few minutes without any damage to the plexiglass. The only advice is to do it in hot days use high speed for the job and proceed slowly in the plexiglass. It is more risky when you drill the holes for the rails.
Eugenio
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Kadir
Unregistered
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Posted Monday, August 8, 2011 @ 07:03 AM
Finally someone, from Weiss Plastics, with a straight mind replied to my mail with some good news which is pasted below:
"Dear Sir,
you are absolutely right, as the mistake is ours, we will send you the rear canopy.
Please send us back the canopy you don’t need and we will send the rear RF5 canopy in return at no cost.
Let us know when and where to pick up so wrong one so you have no costs sending it back to us.
Sorry for the mistake and hoping this answer will make you a happy customer again
Friendly yours
i. V. Mario Bahlouli"
I hope this will settle things
Kadir
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eugenio
Unregistered
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Posted Monday, August 8, 2011 @ 10:31 AM
Here you have the demonstration that what I said is true. Mario is the chief account manager and know the problem with the czeck plant.
Eugenio
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JamesB
Unregistered
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Posted Tuesday, August 23, 2011 @ 11:35 PM
Wading into deep water.
I am starting to install the RF5B canopies I bought from Thermotec, two years ago. They happened to come just at a time when my consulting business was feeling the effects of the problems in the economy and I simply did not have the extra money that Thermotec wanted for installing the canopies.
It feels like my work on the open cockpit project was a training camp for this. It was easier because the pieces were flat. If I made a mistake, I simply cut a replacement. Polycarbonate is also a lot more flexible and forgiving when it comes to installation than acrylic.
First I straightened and repainted the frames.
Then mounted the untrimmed canopies to see how close they are to what I need. Frankly, I had hoped closer. There's a lot of trimming to do. These are with the vent windows on the other side, about 110mm from the cockpit edge, parallel to the edge.
Realized that for me to trim the edges, I'd need better access to them. My workbenches are wide enough that if I wrapped the canopies around them, they'd end in the middle of the bench. So, I made a trimming stand out of mostly spare wood to give me an upper work surface and a lower cross support for the canopy.
Fasteners: The previous canopy cracked in many places at the screws. This time I'm using standard #4 stainless aircraft sheet metal screws. The flat head will allow the canopy to move underneath. Using a heat gun, I applied a 1/8" band of electrical shrink wrap to the threads just below the head that would contact the acrylic. Others have suggested using fish tank tubing. But the size of hole to allow that thickness seemed prohibitive when I tried tests of it. The electrical shrink wrap is tough and was heated just enough to grab the screw. A 5/32" hole seems perfect to allow a small bit of movement of the covered screw and still have good coverage from the head of the screw. Overall, it let's me use a smaller screw than I could if I used a thicker bushing material. #4's seem large enough.
Trimming: Acrylic fractures with too much vibration. These canopies will require quite a bit of cutting. Due to the shape of the canopies, a band saw is not a good choice for me. A jig saw is not recommended due to vibrations. Routers can catch if you cut too deeply. Which left me one other tool -- similar to a router -- a RotoZip. Essentially, a high speed router that uses about a 1/8" spiral, upcut bit (looks a lot like a drill bit). I tried it on the old canopy and it works great! Easy to control. Makes a clean cut. The absolute best part is that my wife gave me this tool almost 10 years ago and I've never had a use for it. So, she's ecstatic that her Rotozip now has an important job to do. Whew. I never thought cutting acrylic had a socio-political dimension to it. Live and learn.
Just started the first minor trimming with a belt sander today. Am taking it very slowly. Trimming. Checking fit. Trimming. Checking fit. Ad nauseum.
Will add more as the project moves along.
[Edit by JamesB on Tuesday, August 23, 2011 @ 11:36 PM]
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Jorgen
Unregistered
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Posted Thursday, August 25, 2011 @ 02:50 AM
James,
thanks so much for sharing that, the pictures are really helpful to understand what the problems are and how to handle them. I hope you find some consolation during your seemingly endless task that your fellow Fournieteers will greatly benefit from your documentation, so your "endless" task will in some way pave the way for future Fournier canopies.
May the 4's be with you/ Jörgen
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