[old PLA] bubbles in print I recently started printing again and chanced upon some old PLA filament kept well, and here is what I found out. The PLA is not as flexible, and has bubbles in them. They do not give popping sound like in ABS so I am not too sure if they are due to moisture. They also are to a great extent dependent on the print temperature. Anybody has any idea what is going on? Pictures from left to right: print temperatures 210, 200, 190, 180 s1045.photobucket.com mod_embed_images_loadimage('dbc5b5419fb1d33e94dac5b49a91a0e8', '/forum/thumbcache/b02/429/fe9/117/1f1/509/832/438/877/5bd/3d_800x400.png', 'http://i1045.photobucket.com/albums/b457/chngyian/P1140193_zpsyacvocko.jpg', 'https://reprap.org/forum/addon.php?262,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1045.photobucket.com%2Falbums%2Fb457%2Fchngyian%2FP1140193_zpsyacvocko.jpg', 'http://s1045.photobucket.com/user/chngyian/media/P1140193_zpsyacvocko.jpg.html', 762869, 800, 400, 'Loading image ...', false); s1045.photobucket.com mod_embed_images_loadimage('ea4b3bbca33b88a0b7b9d0b4825e9383', '/forum/thumbcache/dc1/026/970/205/cfa/d1a/1c3/dca/ac3/c72/1f_800x400.png', 'http://i1045.photobucket.com/albums/b457/chngyian/P1140192_zpss6femann.jpg', 'https://reprap.org/forum/addon.php?262,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1045.photobucket.com%2Falbums%2Fb457%2Fchngyian%2FP1140192_zpss6femann.jpg', 'http://s1045.photobucket.com/user/chngyian/media/P1140192_zpss6femann.jpg.html', 762869, 800, 400, 'Loading image ...', false); s1045.photobucket.com mod_embed_images_loadimage('2e9e0e2bdc4147a5fe76c4ebd0c0b6d0', '/forum/thumbcache/42d/784/0ca/601/a43/e77/2f4/81f/d68/bad/a6_800x400.png', 'http://i1045.photobucket.com/albums/b457/chngyian/P1140191_zpsnimuqfy2.jpg', 'https://reprap.org/forum/addon.php?262,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1045.photobucket.com%2Falbums%2Fb457%2Fchngyian%2FP1140191_zpsnimuqfy2.jpg', 'http://s1045.photobucket.com/user/chngyian/media/P1140191_zpsnimuqfy2.jpg.html', 762869, 800, 400, 'Loading image ...', false); s1045.photobucket.com mod_embed_images_loadimage('ad426cdf561d85ed3396b5a814be9ab5', '/forum/thumbcache/42d/784/0ca/601/a43/e77/2f4/81f/d68/bad/a6_800x400.png', 'http://i1045.photobucket.com/albums/b457/chngyian/P1140191_zpsnimuqfy2.jpg', 'https://reprap.org/forum/addon.php?262,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1045.photobucket.com%2Falbums%2Fb457%2Fchngyian%2FP1140191_zpsnimuqfy2.jpg', 'http://s1045.photobucket.com/user/chngyian/media/P1140191_zpsnimuqfy2.jpg.html', 762869, 800, 400, 'Loading image ...', false); s1045.photobucket.com mod_embed_images_loadimage('507a8f1541a5520a235e0b93c496f2f7', '/forum/thumbcache/64e/977/e19/f9c/88a/700/338/338/f29/f6b/cd_800x400.png', 'http://i1045.photobucket.com/albums/b457/chngyian/P1140189_zpsqsli6jwq.jpg', 'https://reprap.org/forum/addon.php?262,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1045.photobucket.com%2Falbums%2Fb457%2Fchngyian%2FP1140189_zpsqsli6jwq.jpg', 'http://s1045.photobucket.com/user/chngyian/media/P1140189_zpsqsli6jwq.jpg.html', 762869, 800, 400, 'Loading image ...', false); Close up from 210, 200, 190, 180 s1045.photobucket.com mod_embed_images_loadimage('826c31f66d5bcc322833d7a4c6b744a9', '/forum/thumbcache/b31/a26/f9d/c7d/217/91a/fe0/5ff/8b9/2cb/f5_800x400.png', 'http://i1045.photobucket.com/albums/b457/chngyian/P1140187_zps8nrloxqr.jpg', 'https://reprap.org/forum/addon.php?262,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1045.photobucket.com%2Falbums%2Fb457%2Fchngyian%2FP1140187_zps8nrloxqr.jpg', 'http://s1045.photobucket.com/user/chngyian/media/P1140187_zps8nrloxqr.jpg.html', 762869, 800, 400, 'Loading image ...', false); s1045.photobucket.com mod_embed_images_loadimage('776dce2429028cfc2204327cb594a8bd', '/forum/thumbcache/49d/5b4/c3c/f67/037/aa7/cd1/b03/0ff/c6d/1f_800x400.png', 'http://i1045.photobucket.com/albums/b457/chngyian/P1140186_zps1ozcotd3.jpg', 'https://reprap.org/forum/addon.php?262,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1045.photobucket.com%2Falbums%2Fb457%2Fchngyian%2FP1140186_zps1ozcotd3.jpg', 'http://s1045.photobucket.com/user/chngyian/media/P1140186_zps1ozcotd3.jpg.html', 762869, 800, 400, 'Loading image ...', false); s1045.photobucket.com mod_embed_images_loadimage('e7ee44ea43a096cdf00f5fcfa228d12e', '/forum/thumbcache/e9e/b05/37e/8ad/b11/916/d0e/8d7/a75/6c1/01_800x400.png', 'http://i1045.photobucket.com/albums/b457/chngyian/P1140185_zpsg8sptmzw.jpg', 'https://reprap.org/forum/addon.php?262,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1045.photobucket.com%2Falbums%2Fb457%2Fchngyian%2FP1140185_zpsg8sptmzw.jpg', 'http://s1045.photobucket.com/user/chngyian/media/P1140185_zpsg8sptmzw.jpg.html', 762869, 800, 400, 'Loading image ...', false); s1045.photobucket.com mod_embed_images_loadimage('4375b3fe5761e485f09f475e3201888c', '/forum/thumbcache/544/067/7f6/280/36f/c19/8ac/d56/0d4/c4d/46_800x400.png', 'http://i1045.photobucket.com/albums/b457/chngyian/P1140184_zps45uzmp4d.jpg', 'https://reprap.org/forum/addon.php?262,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi1045.photobucket.com%2Falbums%2Fb457%2Fchngyian%2FP1140184_zps45uzmp4d.jpg', 'http://s1045.photobucket.com/user/chngyian/media/P1140184_zps45uzmp4d.jpg.html', 762869, 800, 400, 'Loading image ...', false); https://reprap.org/forum/read.php?262,762869,762869#msg-762869 Sun, 19 Jul 2026 18:02:21 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?262,762869,763369#msg-763369 Re: [old PLA] bubbles in print https://reprap.org/forum/read.php?262,762869,763369#msg-763369 Evan Printing Thu, 20 Apr 2017 08:56:20 -0400 https://reprap.org/forum/read.php?262,762869,762869#msg-762869 [old PLA] bubbles in print https://reprap.org/forum/read.php?262,762869,762869#msg-762869
The PLA is not as flexible, and has bubbles in them. They do not give popping sound like in ABS so I am not too sure if they are due to moisture. They also are to a great extent dependent on the print temperature.

Anybody has any idea what is going on?

Pictures from left to right: print temperatures 210, 200, 190, 180











Close up from 210, 200, 190, 180








]]> chngyian Printing Mon, 17 Apr 2017 10:53:27 -0400