surfboard skin repair

Talk Composites - The Forum for Advanced Composites

Back

surfboard skin repair

Author	Message
ian.kelly@basegroup.co.uk	ian.kelly@basegroup.co.uk posted 5 Years Ago HOT Topic Details
Group: Forum Members Posts: 4, Visits: 21	I'm doing a patch repair on a surfboard and want to set up a vacuum patch over the repair area only ie not a full bag over the whole board. I've looked at some sites on line and they recommend to only apply a partial vacuum so as not to damage the board. They show a setup where the vacuum pump is working against a controlled leak - tee piece in line and a small pipe clamp adjusted to get the vacuum needed - in my case 8 in hg. Trouble is my pump instructions say not to do this. Can anyone recommend the correct setup for this? Thanks
	Reply Like 3
Lester Populaire	L Lester Populaire posted 5 Years Ago HOT Post Details
L Group: Forum Members Posts: 311, Visits: 13K	+x ian.kelly@basegroup.co.uk - 3/20/2019 11:02:28 PM I'm doing a patch repair on a surfboard and want to set up a vacuum patch over the repair area only ie not a full bag over the whole board. I've looked at some sites on line and they recommend to only apply a partial vacuum so as not to damage the board. They show a setup where the vacuum pump is working against a controlled leak - tee piece in line and a small pipe clamp adjusted to get the vacuum needed - in my case 8 in hg. Trouble is my pump instructions say not to do this. Can anyone recommend the correct setup for this? Thanks Well most likely your board was not bagged when it was produced so you might as well just do a wet layup without vacuum compaction. Depending on the location i would probably just put a bit of release film onto the laminate, squeeze out the excess resin with a spatula and let it cure like that. Chances are that your core will outgas and you pull gas through your laminate which will result in porosity.
	Reply Like 4
ian.kelly@basegroup.co.uk	ian.kelly@basegroup.co.uk posted 5 Years Ago HOT Post Details
Group: Forum Members Posts: 4, Visits: 21	+x Lester Populaire - 3/21/2019 5:41:08 AM +x ian.kelly@basegroup.co.uk - 3/20/2019 11:02:28 PM I'm doing a patch repair on a surfboard and want to set up a vacuum patch over the repair area only ie not a full bag over the whole board. I've looked at some sites on line and they recommend to only apply a partial vacuum so as not to damage the board. They show a setup where the vacuum pump is working against a controlled leak - tee piece in line and a small pipe clamp adjusted to get the vacuum needed - in my case 8 in hg. Trouble is my pump instructions say not to do this. Can anyone recommend the correct setup for this? Thanks Well most likely your board was not bagged when it was produced so you might as well just do a wet layup without vacuum compaction. Depending on the location i would probably just put a bit of release film onto the laminate, squeeze out the excess resin with a spatula and let it cure like that. Chances are that your core will outgas and you pull gas through your laminate which will result in porosity. I'd prefer to use the vacuum pump as recommended here --link The problem is my pump recommends that it is not set up against a controlled leak. Is there a proper way to set this up that won't damage the pump?
	Reply Like 4
oekmont	oekmont posted 5 Years Ago HOT Post Details
Group: Forum Members Posts: 550, Visits: 27K	At such an easy surface, and such small patches, vacuum won't bring you any measureable benefits. If you sand it down flat, it won't even be lighter. A void free laminate isn't hard to do in this case. You could run a separate line to a vacuum gauge, and clamp the pump line at the desired pressure. This only works, if your setup is 100% tight. Or you get an professional mechanical (quite expensive) or electronic (maybe more expensive than buying a new board) vacuum reducer/controller.
	Reply Like 3