RepRap Masterclass | Part Four
RepRap Masterclass | Fabmoment #4
13th of October, 2009
this week we’ve continued the process of poly-urethane casting. we’re getting close to completing this part of the manufacturing process. to speed up the process we’re creating a new silicone mold for a part that we need in quite a big number. others started with the assembly of the carrying axes. finally, time was spent on drilling out imperfect holes of some casted parts.
• drilling out imperfect holes of casted parts
o machine: dremel with a sanding head
o low speed, precise adjustments (press fit)
• assembly of the carrying axes
o carefully fasten the parts and try out the strength on each other’s head
• creating a silicone casting mold
o first print the negative parts for the mold using a commercial 3D printer
o carefully clean the printed parts
o sand the printed parts until their surface feels really smooth
o create an airtight mold casing
o to be continued..
