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Thread: Sewing Triangles- How do I line them up?

  1. #1
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    I need some help. I'm working on the "All Around the Neighborhood" quilt from the fabshophop and am having trouble trying to make the roof of the house.
    It seems there must be some kind of trick or some knowledge I don't have but I can't seem to be able to figure out how to sew on the upper triangle so that when the time comes to sew this block to another, the top of the roof (the tip) won't be cut off.
    I know I have to have 1/4 inch above the tip but I don't know how to line up the two blocks to achieve that. And maybe this one will be fine, but when I go to line up the next triangle, I can't figure out how to get them together so that there will be that 1/4 inch seam at the top. I would also appreciate it if someone could tell me what this is called as my attempts at searching for help online haven't given me any results that would help here. Thank you.

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  2. #2
    Senior Member Scraps's Avatar
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    Go back to your member area of the Shop Hop and check to see if this block is one that had corrections posted. I think 7 blocks had corrections!! Good Luck!

  3. #3
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    Unfortunately, these are the correct ones! It's just that I'm the one that needs tweaking...
    Have you tried these? If so maybe you can see what I'm doing wrong. That third triangle seems much too large for its spot.

  4. #4
    Senior Member Scraps's Avatar
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    Sorry - I haven't tried yet, but I'm sure someone will jump in to help you.

  5. #5
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    looks likewhen you sewed the dark strip it made the triangle smaller than the left. Perhaps the left should be trimmed to the size of the right. But be sure and press the right one first. It looks in the picture that it will line up with the center.

  6. #6
    Senior Member booklady's Avatar
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    Looks to me like the light blue triangle is not big enough. When you sew it on it should hang off the top by 1/4 inch. Then when the 2nd triangle is attached, it will sew over the roof and the 1/4 of the blue to make the top corner. That will then leave a 1/4 of the blue for top seam.

    I'd make the blue at least 1/2 inch bigger and sew from bottom of roof to top. You can always cut off the extra at the top.

    Just MHO though!

  7. #7
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    I'm not doing a good job of asking this question. How do you sew the two triangles so that they will line up correctly? should the bottoms match? I've taken apart 3 of these already as I either sew them too high or too low. I can't seem to figure out how the seams should be aligned.

  8. #8
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    Quote Originally Posted by booklady
    Looks to me like the light blue triangle is not big enough. When you sew it on it should hang off the top by 1/4 inch. Then when the 2nd triangle is attached, it will sew over the roof and the 1/4 of the blue to make the top corner. That will then leave a 1/4 of the blue for top seam.

    I'd make the blue at least 1/2 inch bigger and sew from bottom of roof to top. You can always cut off the extra at the top.

    Just MHO though!
    Looks like my reply crossed your answer at the same time. I have carefully checked all of the measurements and have cut them correctly. So the seams should hang off by 1/4 inch? I don't think it did- guess that's obvious to you. The first blue triangle is larger as it is than the one that is sewn in pieces and that one seems too large. This is very confusing.

  9. #9
    Super Member sewwhat85's Avatar
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    it would all be eaiser if i could just come over and show you LOL

  10. #10
    Power Poster Prism99's Avatar
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    Here's an explanation of how to sew triangles on:
    http://quilting.about.com/od/rotaryc...angle_tips.htm

    It helps if you nip off the dog ears first.

    I'm not totally convinced your blue triangles are cut large enough. That first triangle that is already sewn on looks too small to me. However, it may be giving that impression because we are seeing only the right side. Could you flip it over so we can see how the seam allowances are lined up on the wrong side?

  11. #11
    Senior Member connie_1936's Avatar
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    match up those seams just the way you have them laid out. keep the bottom of the blocks even and you should be fine. you will have a point extending at the top.

  12. #12
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    Well, here is the result of sewing them as they were placed. I'm guessing that the smallest blue triangle is not the right size (too small) and I cut the others in that block to that size to get the triangle effect. I'll cut that larger (their directions must still be wrong!) and see what happens.
    I checked and rechecked the directions and my cutting. That triangle is cut from a 2 1/8 inch square. I can't understand why no one has pointed out to them that this is inaccurate.
    (I just sent them an email but don't expect a reply.)
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  13. #13
    Super Member Connie in CO's Avatar
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    Last picture shows you don't have a 1/4" on top.

  14. #14
    Power Poster Prism99's Avatar
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    Yup. The larger blue triangle is fine, but the smaller blue triangle is too small. Since that is the chimney piece, I'm thinking you could sew an extra strip across the top of that triangle to make it larger, then cut it down to correct size after sewing. Chimneys aren't usually exactly as high as the rooftop anyway; they are usually shorter. Were the two blue triangles cut with different methods?

  15. #15
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    That's a great idea to add a strip along the top, especially since I've completed 5 of these to exactly this size. I was thinking of just redoing all of them.
    Both the large blue triangle and the small blue triangle next to the chimney were cut as squares, then cut on the diagonal to make two. I've checked the directions, even downloading again to make sure that I had the updated version, checked my cut sizes, and still can't figure out how this happened unless the directions are still wrong. But I would think that someone would have alerted them to this so I don't understand. Maybe I'll write another post asking if anyone else has started this quilt.

  16. #16
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    Quote Originally Posted by Prism99
    Here's an explanation of how to sew triangles on:
    http://quilting.about.com/od/rotaryc...angle_tips.htm

    It helps if you nip off the dog ears first.

    I'm not totally convinced your blue triangles are cut large enough. That first triangle that is already sewn on looks too small to me. However, it may be giving that impression because we are seeing only the right side. Could you flip it over so we can see how the seam allowances are lined up on the wrong side?
    Thank you for that link. That is information that I need!

  17. #17
    Super Member Connie in CO's Avatar
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    I was thinking,why couldn't sew a smallish strip on each side of red piece.That would make the triangle bigger wouldn't it.Or make the red wider?

  18. #18
    Power Poster nativetexan's Avatar
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    when you have a straight edge (the bottom of your triangles) you line those up to match.
    however your photos look like your pieced triangle isn't the correct size. do you have a template you can place it on to see if it is the right size?

  19. #19
    Super Member ssgramma's Avatar
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    The triangle became smaller when you sewed in the chimney. Looks to me like that triangle should be cut bigger to accomodate the 2 seams.

    I do live the idea of just adding on at this point!

  20. #20
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    Adding on may be the only solution for me because if I increase the size of the triangle, it puts the chimney further away from the house and that isn't necessary. Otherwise I have to figure out the size of the rectangle that that triangle should be cut from. Maybe I'll have to sit down and play with some scraps.

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