Monthly Archives: April 2016

A Little bit about Finishing

niagra

 

In my last blog post, I mentioned that I was planning to switch from my tried and true solvent based lacquer finish to a more eco friendly water based finish. A reader commented on the switch, and this lead me to jot down some thoughts I have been having on this issue…well…and as another excuse to avoid working on  The Madcap Woodwright-Thoughts On Joyfully Working Wood With Abandon manuscript.

As the Muse has continued to elude me of late, I figured that writing ANYTHING was better than hiding from my ThinkPad. (A true hot rod of a laptop by the way)

As I mentioned, my normal film finish (as opposed to a penetrating finish like Danish oil) was always some version of a traditional lacquer finish. Nitrocellulose, or “pre catalyzed” lacquer being the two main versions most commonly used, until recent changes to environmental law began making finding reliable and affordable sources for these finishes difficult.

In addition, I have many, many, MANY years under my belt using these finishes. They are wonderful, and provide a good protective, and visually pleasing finish. Ease of use and over all versatility round out the reasons why they are traditionally preferred finish choice.

Their downsides, for me at least, include toxic vapor, flammable vapor, environmentally negative, and they require specialized EXPLOSION PROOF exhaust equipment to be anywhere near compliant with safety regulations in most areas.

Enter water based finishes.

Since their initial introduction, some 15(?) plus years ago, they developed a reputation for being cranky, finicky, and generally not ready for prime time.

A lot has changed in that time.

Now, let me say here, I have yet to actually use a waterborne finish. To say that I am hopeful, yet skeptical, would be an apt description.

However, word on the street among those who have actually used these finishes, say that they act very much like their solvent based predecessors. The word is that the newest generations of waterborne finishes cure to a tough, hard, and nearly identical to the traditional lacquers they are moving to replace.

target finishes

One thing to note, ANY solvent free finish that calls itself  “Lacquer”, is NOT lacquer in the strictest sense. Rather, most water based lacquers are in fact an ACRYLIC rather than a true lacquer. This is important because it has some significant differences in performance. Acrylic finishes are difficult to strip off when doing a refinish as compared to traditional lacquer, it does not “move” in the same way a traditional lacquer does either. This is, or could be important, for instrument makers or craftsman who take wood movement into consideration.

That said, the latest generations of acrylic lacquers are said to have much improved elasticity properties, and  perform very, very closely to solvent based lacquers but tends to be brand dependent.

All of this leads me to the decision to begin working with the above pictured finish. By all accounts the Target Coatings acrylic lacquer is as close to traditional lacquer as one can get in the latest generation of waterborne finishes.

My hope is that I will find that this is the case. I really want to be able to make the switch from solvent based to water based spray-able finishes.

Much more on this as events unfold……stay tuned.

Writer’s Block Sucks…

dalai-lama-caddyshack

Since I had been using my poor, much overtaxed, little tablet to do the majority of my writing since starting this blog, I had a built in excuse to avoid the subject of the dreaded “Writer’s Block.”

Now that I have obtained an incredible, new-to-me, Lenovo Thinkpad, I no longer have technical difficulties as an excuse for the denial I have been wallowing in regarding the case of writer’s block I have.

So, while I have been remarkably negligent in my writing, I am now, as they say, “Back in the saddle.”

Attempting to get myself back in the game, I figured I would whip something up for this blog as a means of stirring up the creative juices, and reconnect with my muse.

Thus far, I have been somewhat mired in finishing off the equipping of The Tiny Shop, and doing some light restoration work to keep the mind and hands supple and well practiced.

I had the good fortune to find a deal on a brand new 1 1/2 HP motor for my Delta jointer, and it is now semi operational. I need to dial in the knives still, but otherwise it is fairly tuned and ready to do real woodworking finally. wpid-wp-1444014009777.jpg

 

Also, after much research and hand wringing, I decided that using the tried and true HVLP conversion set up that I had been using for years for applying finish was just not in keeping with my position on environmental responsibility. Further, It just had far too much in the way of “tweaking” that always seemed to need to be done in order to get the level of quality I wanted in a finish.

Add to that that I was planning a switch to water borne finish media, and the need for a different application tool was obvious.

 

Enter the Fuji Semi-Pro2.

fuji

The Fuji set up is a very well regarded turbine driven High Volume Low Pressure (HVLP) system. The idea is, that with this small, self contained set up, over spray is kept to an absolute minimum,which means a significant boost in savings as it applies to material cost. Also, since there is no traditional compressor, oil, water, and other potential contaminants are no longer a worry.

Since the cup gun is stainless steel, (both the gun and the cup) I can shoot both solvent based finishes as well as water based finishes.

Word on the street about Fuji turbines is universally good. They are regarded as some of the very best finishing equipment at markedly reasonable prices. Far less than other manufacturers like Apollo, and Grayco. Bang for the buck, and considering the space limitations of The tiny Shop, this is a no brainer.

All that remains for initial equipment purchases are another router or two, a hollow chisel mortiser, and a dovetail jig.

I debated long and hard on these last two, expensive, pieces. I decided to add these to my “need to have” list because, as I have aged, hand cutting joinery has begun to take its toll on my hands/joints. As much as I enjoy hand cut joinery, I feel that from a longevity standpoint, it makes sense for me to mechanize these operations. Trust me, if I thought that I could continue indefinitely hand cutting my  joints, I would. It is a wonderful exercise in mindful woodworking. Alas, the ravages of a misspent youth and father time, are beginning to rear their ugly heads.

That, and it gives me two more tools to shop for…..so I got that going for me…..which is nice.

carl