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Archive for the ‘Uncategorized’ Category
Monday, February 6th, 2012
We have been working on our Downdraft Sanding Center for some time now, and this week we finally get to the heart of the system, the torsion box work top.
A torsion box is essentually built like an airplane wing: Ribs provide the internal structure and the addition of relatively thin skins to the faces creates a very strong but lightweight box. The fact that the core of the torsion box is mostly air space makes it ideal as a downdraft sanding table with a few modifications to the internal ribs.
Begin with the base. I cut it from 3/4″ ply, 24 inches wide and 36 inches long. I then spent a bit of time laying out the rib locations on the face. This allowed me to space them correctly, and see how many ribs were needed. I laid the ribs out for approximately 6″ spacing on center. With the outside faces, the spacing was not exactly 6″ which is why I did the layout first.
 
I ripped several strips of the same ply 4″ wide, then crosscut them to length. The long sides were 36″, but the long internal ribs were about 1 1/2″ shorter. I left the stop set at 36″ and used two scraps of the same ply so the center ribs would be exactly right since we know that the ply is not really 3/4″ thick. The shorter cross ribs are all the same, but while the ends remained 4″ wide, the rest were ripped down to 3″ wide to create openings for air circulation in use.
I used the layout on the base to mark the locations of half lap cuts in the ribs. I marked one edge of each rib to keep orientation the same. Otherwise, any minor difference can warp the finished box. The dado was set up in my saw and all the half laps cut.

When you dry fit the ribs you will see that air can pass under the short cross ribs, but the long ribs divide the box into three sections. Holes could be drilled to allow for the airflow, but that could leave dust trapped in the box where it would be hard to remove. So I stacked the three long ribs together and cut semi circles in the bottom edge between the half laps. You can see in the dry fit photo that the airflow will now reach all sections, and dust can flow out.

With the ribs dry fit as shown AND the sides clamped in place to insure the proper fit, I marked where the long ribs sat on the base and drilled pilot holes through for screws. I glued and screwed the ribs in place, then glued and nailed the sides and ends in place as well. If your halp laps are cut well, everything should be very flat across the top. If not, sand it all flat before adding the top.
Finally, the pegboard top was cut to size and glued to the top of the assembled box. I used my vacuum bag to clamp it in place, but stacking weights on the top would work too. If you vacuum clamp your box, USE LIGHT PRESSURE. Too much vacuum can force the top down between the ribs or even crush it entirely.
Next time we will mount the dust port, attach the doors and hang the various sanding supplies on the cabinet.
I certainly invite you to add your thoughts or send along ideas that have worked well for you. Please feel free to add your comments here on the blog, on our Facebook page, or via Twitter. Let us know what you think! -2Sand.com
Tags: 2sand, 2sand.com, abrasive, aluminum oxide, belt sander, blog, casters, downdraft, electric sanders, garnet paper, glasspaper, organization, sanding, sanding station, sanding table, Sanding tips, sandpaper, storage, woodworking, work station Posted in General, Sandpaper, Uncategorized, Woodworking | No Comments »
Tuesday, January 10th, 2012
Whew, the holidays are over! Don’t get me wrong, I enjoyed mine, and hope you enjoyed yours too, but all that partying and visiting really cuts into the shop time. I will admit to not getting as far as I would have liked with the Downdraft Sanding Center over the last few weeks, but I did manage to get wheels mounted and the doors ready to mount.
For this project, I chose some better quality casters. I am not so concerned about the weight rating, even four cheap casters at 150 lbs each will handle more than I can lift onto the table. But a sanding center will vibrate a lot and certainly will be pushed from side to side as we sand the edges of parts and such. So I wanted to use casters that locked not only the wheel, but also the swivel. I got a set of four with 1/2″ dia threaded studs for about $40.00

The stud was not long enough to reach all the way through the base frame, so I counter bored the holes and secured them. This was done before finally attaching the base frame. Now the cabinet is complete and can be easily moved around as I continue work. I have avoided building the top because all of this work on the cabinet is a lot easier without the big top.
The final step on the cabinet itself is to make and attach the doors. The doors are frame and pegboard panel, and are built exactly like the sides and back of the cabinet were, but with thinner stock.
I milled the stock at 3/4″ thick and used the same stub tenon technique to glue them together. A couple pair of simple hinges are all that is needed to hang the doors. In the next installment, we will create the “egg crate” structure that makes up the center of the torsion box top.
I certainly invite you to add your thoughts or send along ideas that have worked well for you. Please feel free to add your comments here on the blog, on our Facebook page, or via Twitter. Let us know what you think! -2Sand.com
Tags: 2sand, 2sand.com, abrasive, belt sander, blog, casters, downdraft, electric sanders, finishing, sanding, sanding center, Sanding Storage, sanding supplies, sandpaper, storage, woodworking Posted in General, Sandpaper, Uncategorized, Woodworking | No Comments »
Wednesday, October 5th, 2011
Ok, I have a confession to make: Not all my sanding supplies come from 2Sand.com. There, I said it! Great to have that off my chest!

Seriously, like all of you, even though I buy all my bulk supplies from 2Sand.com, sometimes I need something today, or I notice things I need at yard sales or in the clearance rack at the home center. In the case of clearance items, if the price is good enough I will buy as much as I can. And I firmly believe that until needed, it is best to leave them in the original packaging, especially blister packs.
One of the advantages of the storage unit I am building is that the pegboard panels forming the sides and doors can be used equally well on both the inside and outside. So extra retail packs can be stored on the inside of the cabinet hanging on the walls.

Just use standard hooks. Virtually all of the retail packaging will be punched for hook hanging anyway. And storing them on the inside of the cabinet keeps them clean, organized and out of the way. As you need, you can open a pack up and transfer the contents to the proper rack on the outside ready for instant use.
In the next installment, we begin actual construction on the storage cabinet. I am designing the unit to use standard “two by” stock for the frame members, and pegboard sheet from the home center. You can pick up a few 2 x 4s for yourself if you want to follow along.
I certainly invite you to add your thoughts or send along ideas that have worked well for you. Please feel free to add your comments here on the blog, on our Facebook page, or via Twitter. Let us know what you think! -2Sand.com
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Monday, June 13th, 2011

We’ve talk a fair amount about storing sanding supplies, there is even a photo album on our Facebook Page where friends posted their storage ideas. So in the next several blog posts, we will be developing ideas for keeping your sanding supplies neat, organized and ready to use.
As I gathered the various sanding sheets, disks and such from around my shop for the above photo, I realized two things: First, I have a much greater variety of sanding supplies than I would have been able to tell, and Second, that they were scattered willy-nilly all over my shop!
Then I realized that those above were not all of it! What about supporting items like gum rubber cleaning sticks, sanding blocks, tack cloths and the like? There are a lot of SKU numbers here! This exersize also showed me that my various sanders were scattered around the shop as well. Maybe I want to store them with the sanding supplies.

I might save some space by ditching the cases, but these tools travel with me at times, and I like keeping the accessories in the cases. So now the image forming in my mind has a interior cabinet for stacking the tools and their cases. But my smallish shop does not really have room for a dedicated sanding storage cabinet on the walls. Hmm, maybe a rolling cabinet? Storage inside for the sanders and pegboard on the outside to stow the various supplies? Seems right, I can roll it out of the way when not needed. Ahh, but with all that in mind, the top seems a logical place for a sanding table! A DOWNDRAFT sanding table!

So I prepared a quick CAD sketch of a 36″ x 24″ table with the supporting cabinet being paneled in pegboard. The shapes shown under the cabinet are representations of the various disks and sheets I need to store. I can use these to lay out the locations of the supplies. I want to plan all this out before actually building anything to save time, materials and frustration. What I need to work out now is a reasonable container for the disks that can be easily hung from the pegboard and not add too much to each disk’s ‘footprint’. I have some ideas that I’ll work through in the next post.
If you have features you’d like to see, or want to share your storage solutions, we invite your input here on the blog, on our Facebook page, or via Twitter. Let us know what you think! -2Sand.com
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Wednesday, May 11th, 2011

If you’ve been following along and building your own Lathe Disk Sander, you’ve already been using it. Typically, most folks just use the flat table to round edges, sand rough cut edges to the lines and the like. In this final installment, we’ll discuss some non-typical ways to get the most from your sander.

The fence detailed in the last installment is highly useful for trimming angles very precisely. Once the fence is set, any number of parts can be created with the same angle. The parts can be rough cut, then touched up on the sanding wheel. This is a GREAT way to create very tight miters, especially miters that are not exactly 90 degrees.
Applying solid wood edging to curved parts is where your new tool begins to excel. Here it is shaping the outer edge of the field part, the curve is transfered to the solid stock, the parts rough cut and sanded to the lines. The inside edge must be sanded to the lines using some form of drum sander.

We hope that you have been enjoying this series, and have found it useful. We have designed the Lathe Disk Sander to be quick to set up, and easy to use. Every day, we find more uses for it. (mine will be pointing tomato stakes this week!) We’d LOVE to see your’s at work in your shop, please feel free to send us your photos, we will post them in this blog.
We invite your comments here on the blog, on our Facebook page, or via Twitter. Let us know what you think! -2Sand.com
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Wednesday, May 4th, 2011
It is Woodworking Safety Week again, and we at 2Sand.com want to do our part to spread the safety message. While most folks don’t typically think about digging out the safety glasses and hearing protection when they think of sandpaper or sanding supplies, we are a part of your shop and want you to be safe.
While sanding is not typically a hazard to eyes and digits like using a table saw might be, there are still concerns that you should be addressing. Breathing in fine sanding dust is not good for your nose or lungs, and some people can have severe allergic reactions to some exotic woods. Dust build up in the motors and switches of power tools not only shorten’s their lifespan, but can start fires. (I actually saw a shop refrigerator burt into flames from dust around the compressor!)
Our point here is that no matter the project you are working on or the tools you are using, the single most important safety device in your shop rests between your ears. Develop the habit of thinking safe at all times, and your will become a more safe woodworker.
We invite your comments here on the blog, on our Facebook page, or via Twitter. Let us know what you think! -2Sand.com
RW
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Friday, April 8th, 2011

If you’ve been following this series, you now have a working disk sander on your lathe. While it is highly useful as is, adding a fence will greatly increase the accuracy and utility of your sander.

I could have simply added a 3/4″ slot and used a standard miter gauge, but most stock ones are not terrible accurate, and aftermaket gauges are expensive and quite large for the small table here. I chose instead to cut a pair of dados and embed T-Tracks into the table. I used the thinner T-Track to minimize the material removed from the table. Epoxying the tracks in place makes up for the material removed.

I cut the body of the fence from high quality phenolic faced 1/2″ ply. It is 6″ wide by 12 long. Cutting a cardboard mock up first helped me lay out the slots for the clamping system. the slots are 5/16″ wide and 3 1/4″ long, centered on the base. The idea is that as the base is angled, the effective distance between the clamps gets longer, so the clamps need to be able to slide in and out relative to the base. Again, mocking it up in cardboard saves time and materials. The upright for the fence is also 12″ long, and 1 1/2″ high. I cut a shallow rabet in one edge to locate it properly on the base and allow for a good glue joint. The T-Track is designed to work with 1/4-20 bolts or 5/16″ T-Bolts. I’m using cam clamps for holding the fence, but there are other options.

In use, the fence can be quickly set to 90 or 45 degrees using a square. There are no presets, so it can be set to any angle from 90 to less than 45 using a sliding square or other angle gauge.

The fence is highly useful for squaring up even small parts accurately and safely. Look for our next post where I will provide tips and tricks for getting the most from your new lathe disk sander. 12″ Sanding Disks from 2Sand.com
We invite your comments here on the blog, on our Facebook page, or via Twitter. Let us know what you think! -2Sand.com
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Sunday, March 6th, 2011
In our last blog post, we began a series on building a disk sander for your lathe. This week, we continue the series by building the table.

To keep the work properly aligned to the sanding disk, I decided that my table had to clamp onto the lathe bed. The table needs to be large enough to work on, and sturdy enough to not move while sanding. It also needs to be quick and easy to set up and remove.

The dimensions shown fit my lathe set up. Yours may well be different so be sure to verify before you begin cutting. (Plans will be available at the end of this blog series.)
This view shows the table upside down. The top is made from a melamine shelf I had left over. I cross cut it to 14 inches so that it would extend past the sanding disk on each side. The base is baltic birch (any ply will do) cut 6″ wide to span the lathe bed rails, and 16″ long.
Matching grooves are cut into the table and the base to accept a pair of uprights. The uprights have to be long enough to place the top of the table at the centerline of the disk, in my case, 7 1/4″ over all. Note the two stiffeners mounted underneath the top. These keep the table from flexing forward and back. The center section has to be open to allow access for the clamping knobs. Once I was happy with the dry fit, I glued and nailed the plywood components and screwed the Melamine top on.

I cut two more strips of ply for the clamps. I cut them 1 1/4″ wide so they will drop between the bed rails of my lathe. They are cut long enough to span the 1 1/2″ opening and too long to spin inside the frame. Also note that I added a strip of 1/4″ material along the centerline of the base. This fits snugly in between the bed rails of my lathe and aligh the table to the lathe. Holes were drilled to accept two 5/16th” carraige boltsthrough the clamp blocks and the base.

To set the table, lower the clamp blocks in between the bed rails, and slide the table forward until there is a small (1/16″) gap between the table and the disk. Tightening the knobs will tend to turn the blocks inside the bed rails. Because they are too long to spin inside the frame, they will catch the underside of the rails and draw tight.

Secure both clamps and you are ready to begin sanding!

I was very pleased with the way this system turned out. It provides a stable platform for sanding, and the large disk coupled with variable speed allows for complete control over my work. In the next post, we’ll look at options for adding a fence and/or stops for precision work.
We invite your comments here on the blog, on our Facebook page, or via Twitter. Let us know what you think!
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Sunday, January 9th, 2011
Ok, well sort of George Vondriska of the WoodWorker’s Guild of America (WWGOA) has an excellent video available on using an inflatable drum sander for shaping parts.
Click the image to view the video.
These inflatable drum sanders can be mounted in a lathe or drill press and by controlling the firmness of the drum , you can control the contours of your sanding.
If you have ideas, how-to’s or just comments you want to share, you can comment here on the blog, write us at RW@2Sand.com , or follow us on Facebook or Twitter.
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Sunday, November 28th, 2010

We found an interesting article in the Woodfeeder Blog and wanted to pass it along to our readers.
Seems that the author was wondering if the vacuum freezer bags he has in his kitchen would work for vacuum veneering small parts. (admit it, you’ve wondered too!)
Well, he tried it and you can read the results here.
If you come across interesting articles on the web that you think should be shared with other readers, please feel free to comment here on the blog, or email your suggestions to: rw@2sand.com
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