Well the subject of paint sure brings out good if sometimes contradictory information. For example, here is what based the "HF gun can paint as well as a $600 one": https://youtu.be/tEtlhLqXPNU
As to the applicability of building a KR (or anything else) , I think other than safety, most aspects are a compromise based on builder skill and of course, cost. If I ever get around to the KR1 (its well-built to boat stage and I have Diehl wing and tail skins), it will be after I catch up on these lesser projects which are creating skills. For example I have gone to machinist school and put together a home machine shop. Im not an experienced machinist but I have the basics and the (old) machines to make parts. As to paint, I am restoring an old Cub Cadet garden tractor. Not looking for show quality but i did have the steel components sandblasted. When I went to price paint, I was blown away! An ideal option, would be prime with epoxy and finish with a single stage (catalyzed) urethane. When I looked at etching primer, that called for another primer over that! Then the costly top coat. Well I looked at the cost and said NO WAY, but what are the options? I wanted a hardened paint so rattle cans were out. My local auto paint distributor pointed me to a Lusid product that is DTM (Direct To Metal). It still cost me $210 for the 2 colors, hardner, thinner, etc, for a freakin garden tractor! But thats better than the $450+ for the other options. Then I started learning about respirators. Those OV/P100 canister respirators have charcoal for the organics, and that charcoal only soaks up so much then you are beathing it. The worst stuff in urethane is actually odorless (although everything else stinks). Thats when the respirator issue came up. Bottom line is I think anyone not using supplied air is crazy. Its too simple and too good. No filters to fill up and fail, etc. I probably will buy a hobby air system, but also was researching DIY options. This guy used a full face scuba mask with a hose attached and an off the shelf consumer pump. I would be cautious about any pump, would not want anything that if it shorts out would put fumes into the mask. Which means a pump with a motor separated from the impeller (I think most are).. I've seen them made with old CPAP machines which are made to provide breathing air. This guy used an interesting approach. https://youtu.be/cX-glTu6tz0 _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
