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Old 08-11-2020, 08:15 AM
Beddy350 Beddy350 is offline
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G.day everyone

A modelik Fokker DR1 has landed in my lap so lets see if i'm up to the challenge. I am here to pick everyone's brains if they dont mind. First question is how do you cut the rings for the engine cylinders? Or any small circle, particularly an internal circle? And hello everyone.
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Old 08-11-2020, 02:32 PM
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Philip Philip is offline
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Hello, Beddy, and welcome to the forum. As for cutting circles, my method is to use a sharp knife and go slowly and carefully.
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Old 08-11-2020, 02:56 PM
Doug J Doug J is offline
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Hello Beddy welcome aboard! I happened across a set of punches originally made for making gaskets and they do a pretty good job. So check out ebay. Hope this helps.
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Old 08-13-2020, 05:41 AM
Beddy350 Beddy350 is offline
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Some great advise, Thank you. While im waiting for my hole punches to arrive I have been trying some techniques learnt from some more clever people on youtube. Turns out I can do this, I think. If you dont hear from me again you know i failed. hehe. I'll be back, I Hope.
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Old 08-16-2020, 07:20 AM
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asettico asettico is offline
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Hello Beddy,
welcome from Italy.
If the circles are quite large, you can use a sharp scissors, while for the smaller ones I use almost the same technique as Philip.


I'm sure you'll be back, perhaps with hand injuries, but you'll be back!
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Old 08-17-2020, 09:30 PM
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Wyvern Wyvern is offline
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Welcome! For small cuts on a circle, try cuticle scissors.

Wyvern
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Old 08-17-2020, 09:43 PM
Burning Beard Burning Beard is offline
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When you are cutting with a knife, make a short cut that is comfortable for you then pick up the card (usually it will stay with the knife blade) and move it to the same spot and repeat until you are all the way around. Trying to cut the whole circle at one time is very difficult, just make short cuts. I cut most circles by hand, and find the compass type devices hard to use and less accurate.

I do us a book punch for small circles, and have found that it is easier to use if you use a circle template to guide the tool.

Another tip is to cut the piece away from the page, it is easier to work with a smaller piece.

If the model is not a on line download, scan the pages first so you can reprint them if you make a mistake.

Mike
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Old 08-24-2020, 01:48 AM
Beddy350 Beddy350 is offline
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Lots of great advice . Thank everyone for taking the time to help. I am using the leather punch trick for the engine heads. I can get a consistent size with them but cutting by hand is getting better with practice. As you say Mr beard, short cuts at a time makes the job much easier.
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