I put together a quick video from clips taken last year showing how I do the first pass sanding.
https://youtu.be/ISXOy3miuRU
Here I am sanding the raw strips for the first pass with a Festool Rotex 125 sander. I've got the sander on "coarse" mode and, if I remember correctly, 80 grit sandpaper with a contour pad.
Prior to starting the sanding, I did a quick scraping with a paint scraper to remove glue drips and a quick pass with a block plane to start knocking the corners off between the strips.
The primary goal of this first sanding is to blend together the strips into a seamless smooth surface. The boat should be fair lengthwise, but there are facets formed by the flat surfaces of the strips.
If everything goes right, it shouldn't take long to do this first pass. By moving the sander at a moderate, but consistent speed the sander will easily knock down the higher spots in one pass.
I do a cross-hatch pattern on each section 12 to 14 inch (30 - 35cm) with vertical/transverse motion followed by horizontal/longitudinal motion. The cross hatch pattern helps assure consistent coverage over the whole section. Overlapping each pass by about 1/3rd. After finishing each section I move on to the next section.
The sander is generally kept flat to the surface or with pressure about centered on the pad on curve surfaces. I move my hands around on the sander to maintain a comfortable grip and posture. I manipulate the sander much like I use a hockey stick. The left hand is the sensor and pivot, and the right hand is the control.
While I started with 80 grit on this boat, for some boats with more distinct transitions between strips due to tighter curves or sloppier workmanship, I may start with 60 grit or worse sandpaper. After leveling the whole boat with the coarse sandpaper, I will work my way up through the grits using the same technique to remove the scratch marks.
Messages In This Thread
- Strip: Work in basement?
Rob -- 9/7/2015, 8:43 am- Re: Strip: Work in basement?
Joe -- 9/7/2015, 10:17 am- Varnishing outside
Jaybabina -- 1/29/2016, 1:35 pm- Re: Varnishing outside
Marc Upchurch -- 1/29/2016, 4:46 pm- Re: Varnishing outside
scottbaxter -- 1/29/2016, 4:56 pm
- Re: Varnishing outside
Etienne Muller -- 1/29/2016, 6:22 pm- Re: Varnishing outside
Bill Hamm -- 1/29/2016, 8:29 pm- Re: Varnishing outside
Brian Nystrom -- 1/30/2016, 12:09 pm - Re: Varnishing outside
- Re: Varnishing outside
- Re: Strip: Work in basement?
Nick Schade - Guillemot Kayaks -- 9/7/2015, 10:31 am- Re: Strip: Work in basement?
Rob -- 9/7/2015, 11:56 am- Re: Strip: Work in basement?
Jeff Horton -- 9/7/2015, 5:07 pm- Re: Strip: Work in basement?
Shawn Jones -- 9/7/2015, 8:12 pm- Re: Strip: Work in basement?
Etienne Muller -- 1/30/2016, 5:12 am- Re: Strip: Work in basement?
Bill Hamm -- 1/30/2016, 7:30 am
- Re: Strip: Work in basement?
- Re: RO Sanders and Dust Collection
Nick Schade - Guillemot Kayaks -- 9/7/2015, 9:05 pm- Re: RO Sanders and Dust Collection *PIC*
Rob Macks/Laughing Loon CC&K -- 9/8/2015, 4:23 pm
- Re: Strip: Work in basement?
Paul Sylvester -- 9/8/2015, 7:09 am - Re: Strip: Work in basement?
- Re: Strip: Work in basement?
- Re: Strip: Work in basement?
Nick Riccardi -- 9/7/2015, 12:00 pm- Re: Strip: Work in basement?
Dan Thaler -- 9/7/2015, 7:19 pm- Re: Strip: Work in basement?
Bill Hamm -- 9/8/2015, 2:58 am- Re: Strip: Work in basement?
Jay Babina -- 9/8/2015, 8:03 am- Re: Strip: Work in basement? *PIC*
Rob Macks/Laughing Loon CC&K -- 9/8/2015, 8:37 am- Value of expensive sanders
Nick Schade - Guillemot Kayaks -- 9/8/2015, 4:17 pm- Re: Value of expensive sanders
Rob Macks/Laughing Loon CC&K -- 9/8/2015, 5:00 pm- Re: Value of expensive sanders *PIC*
Rob Macks/Laughing Loon CC&K -- 9/8/2015, 5:20 pm- Re: Value of expensive sanders *PIC*
Nick Schade - Guillemot Kayaks -- 9/8/2015, 7:46 pm- Re: Value of expensive sanders
Bill Hamm -- 9/9/2015, 12:54 am- Re: Value of expensive sanders
Rob Macks/Laughing Loon CC&K -- 9/9/2015, 8:59 am- Re: Value of expensive sanders
Nick Schade - Guillemot Kayaks -- 9/9/2015, 9:36 am- Re: Value of expensive sanders
Etienne Muller -- 1/30/2016, 5:22 am- Re: Value of expensive sanders
Bill Hamm -- 1/30/2016, 7:27 am
- Re: Value of expensive sanders
- Re: Value of expensive sanders *PIC*
Rob Macks/Laughing Loon CC&K -- 9/9/2015, 8:46 am- Re: Value of expensive sanders *PIC*
Rob Macks/Laughing Loon CC&K -- 9/9/2015, 8:49 am- Re: Value of expensive sanders
Nick Schade - Guillemot Kayaks -- 9/9/2015, 9:18 am
- Re: Value of expensive sanders
Daniel Thaler -- 9/9/2015, 3:15 pm - Re: Value of expensive sanders
- Re: Value of expensive sanders
- Re: Value of expensive sanders *PIC*
Nick Schade - Guillemot Kayaks -- 1/26/2016, 8:23 pm- Re: Value of expensive sanders
JohnAbercrombie -- 1/27/2016, 2:13 am- Re: Value of expensive sanders
Nick Schade - Guillemot Kayaks -- 1/27/2016, 8:10 am- Re: Value of expensive sanders *PIC*
Rob Macks/Laughing Loon CC&K -- 1/27/2016, 9:28 am- Re: Value of expensive sanders
Nick Schade - Guillemot Kayaks -- 1/27/2016, 9:30 pm- Re: Value of expensive sanders
Bill Hamm -- 1/28/2016, 2:03 am- Re: Value of expensive sanders *PIC*
Nick Schade - Guillemot Kayaks -- 1/28/2016, 8:42 am- Re: Value of expensive sanders *PIC*
Rob Macks/Laughing Loon CC&K -- 1/28/2016, 8:59 am- Re: Value of expensive sanders
Bill Hamm -- 1/28/2016, 9:07 am- Re: Value of expensive sanders
scottbaxter -- 1/28/2016, 11:34 am - Re: Value of expensive sanders
- Re: Value of expensive sanders
- Re: Value of expensive sanders *PIC*
- Sanding Video
Nick Schade - Guillemot Kayaks -- 1/28/2016, 9:03 pm- Re: Sanding Video
Marc Donnelly -- 1/29/2016, 11:48 am- Re: Sanding Video
Nick Schade - Guillemot Kayaks -- 1/29/2016, 12:25 pm
- Re: Sanding Video
Rob Macks/Laughing Loon CC&K -- 1/29/2016, 11:06 pm - Re: Sanding Video
- Re: Value of expensive sanders *PIC*
- Re: Value of expensive sanders
- Re: Value of expensive sanders
JohnAbercrombie -- 1/27/2016, 12:25 pm- Re: Value of expensive sanders
Rob Macks/Laughing Loon CC&K -- 1/27/2016, 4:03 pm- Re: Value of expensive sanders
Dan Caouette (CSCWC) -- 1/27/2016, 6:48 pm- Re: Value of expensive sanders
Marc Donnelly -- 1/27/2016, 7:04 pm- Re: Value of expensive sanders *PIC*
Nick Schade - Guillemot Kayaks -- 1/27/2016, 9:40 pm- Re: Value of expensive sanders
Bill Hamm -- 1/28/2016, 2:12 am
- Re: Value of expensive sanders
- Re: Value of expensive sanders *PIC*
- Re: Value of expensive sanders
- Re: Value of expensive sanders
- Re: Value of expensive sanders *PIC*
- Re: Value of expensive sanders
Rob Macks/Laughing Loon CC&K -- 1/27/2016, 11:50 am- Re: Value of expensive sanders
Etienne Muller -- 1/27/2016, 3:51 pm- Re: Value of expensive sanders
Marc Donnelly -- 1/27/2016, 6:46 pm- Re: Value of expensive sanders
Bill Hamm -- 1/28/2016, 2:22 am
- Re: Value of expensive sanders
- Re: Value of expensive sanders
- Re: Value of expensive sanders
- Re: Value of expensive sanders
- Hateful tools
Nick Schade - Guillemot Kayaks -- 9/9/2015, 11:32 am- Re: Hateful tools
Paul Sylvester -- 9/9/2015, 11:56 am- Re: Hateful tools
Jay Babina -- 9/9/2015, 2:40 pm- Re: Hateful tools
Rob Macks/Laughing Loon CC&K -- 9/9/2015, 3:15 pm- Re: Hateful tools
Bill Hamm -- 9/9/2015, 3:42 pm- Re: Hateful tools
Jay Babina -- 9/9/2015, 6:22 pm- Air Tools
Dan Caouette (CSCWC) -- 9/10/2015, 9:12 am- Re: Air Tools
Bill Hamm -- 9/10/2015, 2:10 pm
- Re: Air Tools
- Air Tools
- Re: Hateful tools
- Re: Hateful tools
- Re: Hateful tools
Rob Macks/Laughing Loon CC&K -- 9/9/2015, 1:24 pm- Re: Hateful tools
Bill Hamm -- 9/9/2015, 3:59 pm- Hand sanding... (pic) *PIC*
Dan Caouette (CSCWC) -- 9/10/2015, 9:18 am- Re: Hand sanding... (pic)
Bill Hamm -- 9/10/2015, 2:13 pm
- Re: Hand sanding... (pic)
- Hand sanding... (pic) *PIC*
- Re: Hateful tools
JohnAbercrombie -- 9/9/2015, 2:04 pm- Re: Hateful tools
Bill Hamm -- 9/9/2015, 4:00 pm
- Re: Hateful tools
- Re: Value of expensive sanders *PIC*
- Re: Value of expensive sanders *PIC*
- Re: Strip: Work in basement?
Paul Sylvester -- 9/8/2015, 7:55 pm- Re: Strip: Work in basement?
Rob -- 9/8/2015, 8:07 pm- Re: Strip: Work in basement?
Bill Hamm -- 9/9/2015, 3:48 pm - Re: Strip: Work in basement?
- Re: Value of expensive sanders
- Varnishing outside
- Re: Strip: Work in basement?