Mr. G. Brettin's Slow Motion Leg Hump

gbrettin · 11-14-2022, 09:10 AM

Still waiting on wiring... So I've worked on my mold. I really want it done considering the wiring will be done some year.

Desperation has set in on getting the paint chips out so the mold enjoyed an acetone bath. That cleaned and softened the paint but it wasn't exactly the silver bullet I was looking for so sanding is back on the menu! I'm using 120grit to remove and smooth transitions of paint. The center face of the mold has lots of soft spots for some reason. I used my counter sink drill bit to hit the soft spots, fiber glass fill, and then orbital sand back flat. During that process I've had pin holes, additional soft spots, fixed slight low spots in the corners. To deal with the pin holes I've switched to a lighter bondo. That appears to fill pin holes very well. I'm just going to need to leave a very thin layer of the bondo so that pin holes don't come back. I really need the exposed portions to look flawless...we'll see if that happens.

You're going to notice a huge chunk cut from the back of the mold. That was completely necessary so that I could get in and hand sand. That also made life easier with the orbital sander. I think I'm going to cut the back side just the same. Laying in CF will be much easier this way too because I will be able to locate the edge of the face much easier. Lastly I was able to find mechanical lock areas and soften all of that up (by sanding)

To be perfectly honest, I'm nervous about the sanding. I can't go too hard because it will take the part out of spec.

Last thoughts... My wife is not a fan of me stinking up the garage. It's getting pretty damn cold out there too so I'm hoping I don't need to bondo work too much more.

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11-14-2022, 09:10 AM	#11 (permalink)
gbrettin A True Z Fanatic Join Date: Oct 2010 Location: Portage, MI Posts: 2,304 Drives: Tricycle Rep Power: 589452	Still waiting on wiring... So I've worked on my mold. I really want it done considering the wiring will be done some year. Desperation has set in on getting the paint chips out so the mold enjoyed an acetone bath. That cleaned and softened the paint but it wasn't exactly the silver bullet I was looking for so sanding is back on the menu! I'm using 120grit to remove and smooth transitions of paint. The center face of the mold has lots of soft spots for some reason. I used my counter sink drill bit to hit the soft spots, fiber glass fill, and then orbital sand back flat. During that process I've had pin holes, additional soft spots, fixed slight low spots in the corners. To deal with the pin holes I've switched to a lighter bondo. That appears to fill pin holes very well. I'm just going to need to leave a very thin layer of the bondo so that pin holes don't come back. I really need the exposed portions to look flawless...we'll see if that happens. You're going to notice a huge chunk cut from the back of the mold. That was completely necessary so that I could get in and hand sand. That also made life easier with the orbital sander. I think I'm going to cut the back side just the same. Laying in CF will be much easier this way too because I will be able to locate the edge of the face much easier. Lastly I was able to find mechanical lock areas and soften all of that up (by sanding) To be perfectly honest, I'm nervous about the sanding. I can't go too hard because it will take the part out of spec. Last thoughts... My wife is not a fan of me stinking up the garage. It's getting pretty damn cold out there too so I'm hoping I don't need to bondo work too much more.