Michiel, Using bolts to fill the holes would result in bolts that are fused into the holes. They could not be removed. It is possible to fill the holes with hard carbon bolts that will take the heat and shed the molten Zinc but they are expensive and have limited number of cycles before needing to be replaced. Part of the issue with taping out the zinc is that it is so strong in its own right that the tap may take out some or most of the steel threads by mistake leaving a compromised thread that could fail later (not a good thing to design into a process). The other thing to do is to have all thru holes that require separate nuts but we all know how nice it is to not have to get a wrench on the back side of some of those frame related fasteners. It's fun to see participation in the design process of a complex product like the DeLorean, even if it is over twenty years too late. Where was Powder Coat, Low Temperature Stainless, or Core-10 when we needed it? Last week three young men just arriving from Detroit approached me regarding the exact age of my six year old American car. They were amazed that it was not showing advanced signs of rusting out! No one from Detroit or England expects a car to be rust free after this much time. I have been involved in re-importing Bug Eye (Frog Eye?) Sprites back to England because all of theirs are rusted out. Donald L. Ekhoff Morgan Hill, Calif ----- Original Message ----- From: <michiel.bohmer@xxxx> To: <dmcnews@xxxxxxxxxxxxxxx> Sent: Thursday, June 07, 2001 6:41 AM Subject: [DML] Bolts instead of plastic plugs > Hi List, > > Maybe I'm missing a oint here. As I follow the discussion about galvanised frames, I wondered. The specific reason to abandon the galvanised option was "re-tapping" the holes, wich was to much work. > > First of all, how much work would it be? In percentage of the total time it would take to make a frame I figure it's really small. We could ask that Pierce-guy, but I honestly think that retapping the holes is nothing compared to the rest of the work.