Thought y'all might want an update on my whisker pole mast chock mount. I initially was trying to find a carpenter or wood worker with bandsaw or scroll saw and a spindle sander that might have been able to make this piece quickly and easily. I was having a hard time articulating to people exactly what I envisioned so I attempted to draw an example in 3D on SketchUP.
https://drive.google.com/folderview?id=124KvsCtLJo2a8On7C41z0oSFVj0iHb-l I ended up taking my plan to a machinist who advised that he did not like the idea of using starboard or layering pieces together. He suggested solid PTFE (Teflon). With his confidence and knowledge of materials I accepted his advice and agreed to have him make it. By the end of the week he contacted me and said that it was done. https://drive.google.com/folderview?id=1yylCrDkRVBWhbmGsrh4ZdtouE-jUpLLb I was extremely disappointed by the final outcome. It was not as I had designed and worse he made it out of white and then painted it. I'm concerned that any abrasion or hard impact will cause the paint to come off reveling the dingy off-white base color. He explained his own frustration with the PTFE material, told me how he had spent upwards of 2 full days (16 hours @ $55) machining but was only charging for 1 day. He even discounted more than that for a total of $400. $400!!! I have enjoyed a good working relationship with this machinist for some time now and he lives quite close so... not wanting to destroy our relationship I begrudgingly pay him, but not without first explaining my frustration. I went home with a renewed motivation to make my own. Borrowed a band saw and bought a spindle sander. The ~$100 Skill bandsaw is an absolute POS. It was what I had available and fortunately was able to make due. For anyone in the market for a bandsaw, I would recommend avoiding it at all costs. http://a.co/9YKFSjf As for the spindle/drum sander, it was absolutely awesome! I can't say enough about how well it worked. I have never heard of the company WEN before and was quite sceptical but since Amazon is an easy return, I didn't really have much to fear. Now I'm thinking that the WEN drill press is next on my wish list. http://a.co/0W0W8lY The mounting bolts go through the top and bottom layers of the 5 layer sandwich, the curvature of the mast holds each layer on centerline, and the chock holds pressure on each of the five layers keeping them tight against the mast. There is no structural need to bond the layers together. The whole thing turned out quite to my satisfaction which really just added salt to the wound of having had the other piece made by the machinist. Here's the final product installed. https://drive.google.com/folderview?id=102YSIYduLS_S_hxnp0bxKp1naJK1WCG1 Thanks to everybody who answered my questions along the way. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Fri, Feb 9, 2018, 7:20 PM Josh Muckley via CnC-List < cnc-list@cnc-list.com> wrote: > Ok Guys, > > I've been test fitting the whisker pole and track extensions to the mast > while it is pulled. I need an extra section of track to get the inboard > end of the pole high enough so that I can stow the pole on the mast. I'm > pretty much all set but I'm down to the chock which will hold the outboard > end of the pole. The chock has a flat base and needs to be mounted on the > curved leading edge of the mast. > > I'm interested in the collective wisdom as to how to handle this situation. > > > Thanks, > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
