The parts that clamp over your peek insulator should be made from Taulman 618 not Taulman 645; the modified 8B piece should be made of either type of Taulman nylon, But ABS might work for the 8B piece as well. Glass Transition Temp of Taulman 618 is 49.4 degrees Celsius, Heat Deflection Temp at 66 psi is between 170 and 220 degrees Celsius http://taulman3d.com/618-specifications.html. Nylon should be printed on whale brand TUFNOL to prevent warping (I would get 2mm thick TUFNOL (also known as Garolite (LE) )http://www.mcmaster.com/#catalog/119/3609/=oa3ba2. My first attempt was done with blue tape; while the parts still worked, they were warped very much, and so I do not recommend using blue tape. I found that a good way to cut thin TUFNOL is with sheet metal cutters. Here is more information about printing with nylon http://www.youtube.com/watch?feature=player_embedded&v=Klseu2xV68o. If you dont want to use TUFNOL then you can try putting a layer of UHU glue stick http://www.uhu.com/en/products/paper-glues/detail/uhu-stic-klebestiftohne-loesungsmittel-1.html?cHas... glue onto kapton, this works well but not as well as TUFNOL. Bowen clamps should be used with this leveling mechanism https://www.youmagine.com/designs/ultimaker-bowen-clamp-for-up-to-4-extruders You will also need these M3 parts to assemble this leveling mechanism: 92855A316 1 Pack Metric 18-8 Ss Low Head Socket Cap Screw, M3 Size, 16 Mm Length, .5 Mm Pitch http://www.mcmaster.com/#catalog/119/3092/=o6pheb 92855A313 1 Pack Metric 18-8 Ss Low Head Socket Cap Screw, M3 Size, 12 Mm Length, .5 Mm Pitch http://www.mcmaster.com/#catalog/119/3092/=o6ph7r 92125A1401 Pack Metric 18-8 Ss Flat Head Socket Cap Screw, M3 Size, 30mm Length, .50mm Pitch http://www.mcmaster.com/#catalog/119/3107/=o6pfrm 92095A185 1 Pack Metric 18-8 Ss Button Head Socket Cap Screw, M3 Size, 20 Mm Length, .5 Mm Pitch http://www.mcmaster.com/#catalog/119/3107/=o6pflz 94125K472 2 Pack Metric Compression Spring, Ss, 9.4 Mm Overall, 5.5 Mm Od, .50 Mm Wire http://www.mcmaster.com/#catalog/119/1222/=o6pfc1 93625A100 1 Pack Metric 18-8 Ss Nylon-insert Hex Locknut, M3 Size, .5mm Pitch, 5.5mm Width, 4mm Height http://www.mcmaster.com/#catalog/119/3171/=o6pf41