i tried using a jigsaw to cut this archway. its not really cut perfectly to an elipse but it kinda looks good. i went to some really nice home and inspected carpentry around curves etc and its worse than this holy shit. are archways not really ever perfect ? and really who gives a shit ?
Unless you want to invest in a scroll saw, is fine. When I want to cut an arch, I just trace part of something round the draw the lines straight down.
>>3009744The perfect form of an arch is called a catenary. It's not an ellipse or a parabola. It's the shape you'd get (upside down) by hanging a chain across an opening.
>>3009744Saws are for rough cuts. You sand to the final edge.
>>3009751sure. im building several pieces and might can take scraps and wood glue and nail gun
>>3009753i mean for dips. >>3009745i was thinking about a scroll saw blade for the jigsaw but wanted to see how this would turn out.
>>3009746i think it could be any depending on the geometry but in my case an ellipse (or pair of tits) worked
>>3009755the catenary could be done but think the workpoints would have to move up
>>3009755>>3009756
You'd need a template and a router if you want the cutting device to slice the arch bang on the nuts. You could spin those through a router table with some sort of setup.
he beat me to the punch seven years agohttps://youtu.be/iv39j8WhVlg
>>3009755
>>3009966Based post and based digits
>>3009759You make a template with a jigsaw, then sand it to make it nice, then use a router to make the arch using that template.
>>3009966Blessed post
>>3010115You can put the router on an axle for circular or a combination for ellipsoid. It doesn't have to be freehanded and tuned up was the entire point.
>>3009744Using Bondo wood filler and sanding actually worked out not too bad. Sealed with Kilz original oil-based primer (sanded with 80 grit on the first coat and then sanded 150 grit with the second coat) and now painting. I'm doing everything inside because I want to ensure the bondo / primer / paint cure without temperature/humidity changes.
>>3010171These two will be combined, and the backside is the screw holes. This is the front
it’s fine guys doesn’t look great and fucked up a screw hole on the other side i gotta patch with bondo. but this should hold up and look nice enough but it’s far from perfect
>>3010545good job king
Sick
>>3010545Looks decent. You know it's not perfect, but maybe 1 in a thousand other people are ever going to notice any issues with it. I'm spoiled since I have access to a CNC table, but for future reference, a good way to do this is to mount the board you're cutting from vertically put in a couple of brads or tacks for the width, and then hang a rope from them. You can fiddle with the shape quite easily. The only issue is that it'll be upside down when you're drawing it.If you want to make it a pointed arch more like a gothic one, you can instead put 4 brads in. Two pairs with the spacing you want, offset by a bit, and hang the same length of rope from each pair. So you have tacks 1, 2, 3, and 4, and you connect 1 to 3 and 2 to 4. Trace your arch from 2 to 3. The ropes will cross at the point in the center.>All 4 need to be on the same line>The spacing between 1 and 3 and 2 and 4 needs to be the same.>The length of rope used needs to be the same for each pair.>The distance between 2 and 3 is the gap you are trying to cover.It's a bit of setup, but you can get very nice results without taking any measurements beyond length to length comparisons. How wide is the arch? IDK, it fits the door. How tall is the arch? IDK, it looks good. What's the angle on the point? IDK, it looks good.
>>3010747thanks for the info man !
