{"id":295,"date":"2016-06-05T09:32:53","date_gmt":"2016-06-05T01:32:53","guid":{"rendered":"https:\/\/guerillamotive.com\/?p=295"},"modified":"2016-06-05T09:32:53","modified_gmt":"2016-06-05T01:32:53","slug":"june-05-2016-3d-printing","status":"publish","type":"post","link":"https:\/\/guerillamotive.com\/?p=295","title":{"rendered":"June 05, 2016. 3D Printing."},"content":{"rendered":"

I’ve started to get on with my cunning plan for the use of the 3D printer…<\/p>\n

The intention is to print of the bodywork as a prototype to check the design for fit etc, then to use the prototype to take a mold to get the real part.  Part of me wants to vac-bag parts straight off of the 3D print and do away with the mold in the middle, but that’s for down the road.<\/p>\n

Here’s the first proper big part of the 3D printer…<\/p>\n

\"26884134890_df8098d0fe_k.jpg\"<\/a><\/p>\n

The printer will do a 250mm diamter by 350mm tall cylinder so I’ve cut the design up into 17cm cubes, then I can do a 2 cube print.  Here’s the plan:<\/p>\n

\"26884132100_bb48ef2af5_k.jpg\"<\/a><\/p>\n

That breaks down to 9 big prints and a few fiddle fart bits.  This is the bottom left hand bit from above.<\/p>\n

This part is in PLA which has proven far easier to work with than ABS, It weighs 400g so there’s about $10 woth of plastic in it.<\/p>\n

I did this bit 8mm think, it’s pretty stiff so the parts glued together should have no trouble supporting themselves.<\/p>\n

Layer thickness was 0.1mm which contributed to a print time of about 60 hours (~3400 layers to print).<\/p>\n

I’m really happy with the surface finish, if I were making race car parts I’d be happy to take a mold or whatever from it right now.  As it is I don’t think it take much effort to get it to a properly acceptable surface finish.<\/p>\n

This is the support material added by the slicing program:<\/p>\n

\"27158554655_d5ea39f59e_k.jpg\"<\/a><\/p>\n

Which is a PITA to get off…<\/p>\n

\"26554019063_f929094ac4_k.jpg\"<\/a><\/p>\n

I’ll not let it do that again, better to put the support in the part itself or orient things so its not needed.<\/p>\n

These parts are not solid the software creates a skin and the interior is filled with a support structure.<\/p>\n

\"27158561705_8314103b7a_k.jpg\"<\/a><\/p>\n

Detail from the headlamp cover recess.<\/p>\n

\"26884153590_3e745cb1d4_k.jpg\"<\/a><\/p>\n

The next bits done…<\/p>\n

This one was a bit quicker with only a bit over 2400 layers to do.<\/p>\n

I put some structure in it to support the part as the angles flattened out.<\/p>\n

\"26646284914_415b5f193b_k.jpg\"<\/a><\/p>\n

The top inside of the headlamp cut out didn’t go so well it’ll need so work to be usable for a mold, not surprising as its near horizontal and didn’t have support, a lesson learnt there.<\/p>\n

\"27155896932_29f4c44302_k.jpg\"<\/a><\/p>\n

DSC_0308<\/a> by Doug Clark<\/a>, on Flickr<\/p>\n

\"26647500103_cc5d313c75_k.jpg\"<\/a><\/p>\n

DSC_0307<\/a> by Doug Clark<\/a>, on Flickr<\/p>\n

With my artistic talents if I attempted to form curves like this manually, it would have all ended in a soggy mess,<\/p>\n

let alone trying to do a left and right and have them come out as a matched pair.<\/p>\n

\"27252920515_f6125e1639_k.jpg\"<\/a><\/p>\n

\"26646283884_e30ceb6fcf_k.jpg\"<\/a><\/p>\n

The two parts together, the match is good sub mm differences I’d say but some end flash to clean up before they can be glued to together.<\/p>\n

\"26647497763_02ce31cc46_k.jpg\"<\/a><\/p>\n

At this point I’m probably going to stop as we’re moving country next month and I’m just making more stuff to pack at this point.<\/p>\n

Another lesson learnt is the machine makes an annoying noise, its the noise its supposed to make but I can see its driving the family nuts having the thing going for days at a time when they can hear it. <\/p>\n

I’ll need to find a better spot for it in the next house.<\/p>\n","protected":false},"excerpt":{"rendered":"

\nI’ve started to get on with my cunning plan for the use of the 3D printer… The intention is to…\n<\/div>\n
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