HMD 21 starting - help

[jonnymac]

I think the time is here to go back to Evan’s plans(not your cad model) remeasure the panels. I realize you scaled this boat, just multiple the 110% and report back here what you get and where you are seeing differences. otherwise its hard with everyone guessing

[jonnymac]

the other reason I say this, these are fairly large discrepancies and making sure the foundation of the boat is correct is going to pay back 10 fold in time later and frustration.

some potential areas i see could be,
1. which side of the line was the cnc told to cut on, if a 1/4” bit was used this can add up quick.
2. maybe the forms are off and the panels are correct.
3. i don’t remember a posting showing the issue, with the forms moving around, being fixed. if the forms are off even a little they could create gaps.

[fallguy1000]

The panel cut edges are not very straight. They were CNC cut??

Did your Solidworks splines use the drawing measurements as spline vertexes? I don't know Solidworks but sometimes CAD programs do this (purple spline where vertexes are offset)

bobo.JPG

To fix - are they touching the frames at the corners of the frames?

Hopefully any advice? Scanning "gap fill" in the forum in last 12 hrs. Found many but most of the advices start with "if the gap at bow or between hull and frames, dont worry". What if the gap is right on the bottom hope there is a solution.

Of course there is a solution; you fill it in with plywood and consider whether extra tabbing is needed. An Evan question.

Also, the reason for allowing bow fills is they are vertical and the sag doesn't fall out as bad.

I would do whatever Evan wants.

In conventional construction (boats), another thing that is best practice is the side panels need to be under the bottom panel. (Upside down). This is so loading is not on the glue seam, so if you need to move the bottom panels out for overlaps; you might be wider still.. I don't know if this is as great an issue for a displacement craft, but definitely for boats flying and experiencing forces in landings. I only mention this in case you are moving them in a lot to lower the inside margins to make things seem more right(looks a bit so). And because I know best practice is to support loads with panel and not seam. Sorry in advance. Evan may say it doesn't matter here.

Again, Evan can advise.

[duysall83]

İ try to more visualize my chaos. From bow to stern, left side.

[duysall83]

Transom and the right side to the bow. Part i had to cut on that side, bottom panel part near bow.

[duysall83]

and the most dramatic part.

[Fuzz]

Put some packing tape on the inside and fill the gap with epoxy/wood glue. I have filled bigger gaps than that. You will have lots of glass over that area so it will not matter.

[fallguy1000]

Put some packing tape on the inside and fill the gap with epoxy/wood glue. I have filled bigger gaps than that. You will have lots of glass over that area so it will not matter.

It is a good suggestion. Anything to keep the stuff from sagging out.

I like the gorilla ship tape; it is wide and good n sticky.

Just clean the surfaces of dust.

[Fuzz]

Just make sure things are straight, square and fair. At this point fairness should be the number one thing you are looking for.

[Browndog]

Use more zip ties. They seem spaced awfully far apart.