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Author Topic: Shaping and Sanding  (Read 1210 times)

Ticonderoga

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Shaping and Sanding
« on: October 13, 2010, 06:34:41 am »

Hello all,

Does any one have any good tips on Sanding hulls? I am particularly interested to hear about sanding on curves (concave and convex) and avoiding "flat spots".

Advice gratefully accepted.

Andrew   :-))
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derekwarner

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Re: Shaping and Sanding
« Reply #1 on: October 13, 2010, 07:04:17 am »

Andrew.....very few have a robotic [3D] mind to sanding hand relationship, however a flat cork board for concave & a thin contoured cork board for convex profiles will always assist when sanding to achieve the perception of an ever changing flatness %% on these surfaces

Naturally the material being sanded always varies in our visual perspective ...wood can change colour/tone as the contour changes & create sometimes false visual impressions of smoothness or flatness

Same applies to fiberglass surfaces............one trick to consider is as the trueness to final shape gets close ....spray the surface with a suitable undercoat & let dry....this helps in hightlighting any contour defect & provides a witness in the reclamation sanding process.....sometimes you may remove 80% of your first undercoat...& need to apply successive coats.......good luck....Derek :-))

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Derek Warner

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tigertiger

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Re: Shaping and Sanding
« Reply #2 on: October 13, 2010, 09:06:12 am »

I have some rounded sanding blocks, and use these on convex curves.
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Circlip

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Re: Shaping and Sanding
« Reply #3 on: October 13, 2010, 03:25:08 pm »

Have a couple with garnett paper stuck onto chipboard blocks with double sided tape and some with the abrasive stuck onto hard foam rubber blocks.

  Regards  Ian.
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grasshopper

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Re: Shaping and Sanding
« Reply #4 on: October 13, 2010, 03:32:53 pm »

All of the previous advice, tools and equipment plus my contribution:
Go steady, take your time and do a lot of feeling and stroking as well as looking - look upon it as a pleasure and not a chore.



Oh! and wear a mask....
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Ticonderoga

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Re: Shaping and Sanding
« Reply #5 on: October 13, 2010, 09:09:08 pm »

Thanks everyone for the hints and the encouragement. :-))

A few therapeutic hours ahead of me very soon I think. %)  %)
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