HondoMan Report post Posted February 7, 2020 Greetings all, seems to the wet noodle between me ears, there must an answer to this involving maths. Someone wants a case for a mobile, but obviously cannot leave the mobile whilst being made. Also, does not want a wet molded case, merely a slip case. Should be fitted, but not too tight. Having an equation would resolve it and ensure the mobile fits properly into the case. Hypothetical: The mobile is 50mm wide, 100mm long, and 15mm thick. The leather used is 1,5mm and a stitch line 4mm in from the edge. Perhaps age, but I cannot seem to come up with a solution that could suffice this. Anyone have a thought or idea? Cheers! Quote Share this post Link to post Share on other sites
mikesc Report post Posted February 7, 2020 (edited) You can do it with maths...or ..you can make plywood rectangle to the phone dimensions ( plywood exists in multiple thicknesses , one of which is 15mm ) and use that to substitute for the phone(s)..Some ( looking in an antipodean direction here ) would maybe even use a 3d printer to make a "mock up" phone..Phone shops have plastic mock ups on display, so as to stop customers stealing the real "shiny" :) At 15mm..we know it isn't an iphone ..waaaay too thick. Edited February 7, 2020 by mikesc Quote Share this post Link to post Share on other sites
Dwight Report post Posted February 7, 2020 (edited) This is how I do them, . . . this one holds a Samsung Note 8, . . . but I've made several others of varying dimensions, . . . usually I make a plywood or pine wood model, . . . gives me a little something to shape it around. May God bless, Dwight Edited February 7, 2020 by Dwight Quote Share this post Link to post Share on other sites
chuck123wapati Report post Posted February 7, 2020 wooden model here too!! Life is to short for math.Ten minutes with a scroll saw and your done. Quote Share this post Link to post Share on other sites
Handstitched Report post Posted February 7, 2020 When a customer asks me to make a phone case,( or knife case etc.) I draw the outline of the phones dimensions in my order book. 9 times out of 10 I have already made a wood template . If not, I'll make a new one using MDF . Easy to cut shape etc. I make any minor adjustments with pieces of leather . I can use them for wet molding or soft leathers . The pic is just a small sample of the templates I have. Phone sizes have changed a lot over the years.Have a look at the two bottom left corner, and then look at the ones in the top right corner. I do have bigger ones ...yikes ! Hope this helps....a bit HS Quote Share this post Link to post Share on other sites
Sturme Report post Posted February 7, 2020 you can also order dummy phones really cheap on amazon Quote Share this post Link to post Share on other sites
Tugadude Report post Posted February 7, 2020 https://www.amazon.com/dummy-phones/s?k=dummy+phones&page=2 Quote Share this post Link to post Share on other sites
Stetson912 Report post Posted February 7, 2020 Well if it were me and I had to rely on math, I would do this for a starting place: Leather dimension = phone dimension + phone thickness+ 2x leather thickness + 2x stitch allowance + extra If needed. I would make the width of your case 76mm + extra (maybe 8 mm?) Total 86mm. Obviously this isnt exact and may vary a bit. But should get you close. The extra to add will depend on how loose the phone needs to be. Then do the same for the height. That being said, I would recommend making a blank. You can make one out of leather scrap too if you need too. And cardboard works well also for basic shapes like most phones. Quote Share this post Link to post Share on other sites
Hardrada Report post Posted February 7, 2020 In a pinch you could also bunch enough credit-card-sized plastic cards together that give you the thickness of the item. Quote Share this post Link to post Share on other sites
RockyAussie Report post Posted February 8, 2020 Sometimes I 3D print it sometimes I cut it out in ply or craftwood and sometimes I just cut it out in thick veg and keep adding layers and trimming until I get what I want. Give the leather a wax polish and she's good to go. For measurements from that cut some strips at the same thickness you intend to make it from about 20mm(3/4") wide and use that as a ruler to get your lengths laid over your mould piece. Quote Share this post Link to post Share on other sites
HondoMan Report post Posted February 11, 2020 (edited) On 2/7/2020 at 6:02 PM, Stetson912 said: Well if it were me and I had to rely on math, I would do this for a starting place: Leather dimension = phone dimension + phone thickness+ 2x leather thickness + 2x stitch allowance + extra If needed. I would make the width of your case 76mm + extra (maybe 8 mm?) Total 86mm. Obviously this isnt exact and may vary a bit. But should get you close. The extra to add will depend on how loose the phone needs to be. Then do the same for the height. That being said, I would recommend making a blank. You can make one out of leather scrap too if you need too. And cardboard works well also for basic shapes like most phones. Thank you! That was what I was after..... Cheers! Edited February 11, 2020 by HondoMan Quote Share this post Link to post Share on other sites
Stetson912 Report post Posted February 15, 2020 Hope it works out for you Quote Share this post Link to post Share on other sites
