Royal Mail Sizing Guide - Letter and Large Letter
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This simple little guide makes it easy for you to check if a letter or large envelope will pass through the hands of Royal Mail's postal service. The exact size limitations are available at https://business.help.royalmail.com/app/answers/detail/a_id/89/~/size-and-weight-formats-for-uk-mail. My build plate is 20cm x 20cm in size, so I had to trim some sizes down to fit it on my bed. You might find this guide more useful as a thickness sizing chart or for smaller packages in terms of length. Print Settings: Printer Brand: RepRap Printer Model: Prusa I3 Rafts: Doesn't Matter Supports: No Resolution: Doesn't matter Infill: 100% Notes: Printing with 100% infill will help keep the strength of your parcel, ensuring that its thickness fits and doesn't just bend the sizing guide.
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