Build Journal

Answers to topics Results in BPA every day.

Answers to topics Results in BPA every day. Amongst other things, BPA is usually make,Exactly how, Plastics is usually marked with recycle codes 1, 2, 4, 5, And 6 are most unlikely to contain BPA, The FDA’s website page states. “Quite a few, But some, Plastics that are marked with recycle codes 3 or 7 may be made using BPA, BPA is also use to coat thermal paper, So it is found on check out receipts. Because BPA on receipts isn’t bound to the device, It easily sloughs off onto the skin in case the receipts are handled. The study also found lower quantities of BPA in 21 of 22 dollars tested. Dollar bills aren’t containing BPA; It’s theorized that the BPA may have gotten onto dollar bills by reason of coming into contact with cash register receipts and other sources of BPA. Is experience of bisphenol A safe for humans? Based on petroleum, BPA can mimic the hormone estrogen There is a growing body of research indicating that BPA may pose health risks to humans in several ways. Mit is an endocrine disruptor, Meaning that it can impact the body’s endocrine system and potentially cause damaging developmental, Reproductive system, Nerve, And immune effects in humans alongside mammals. Research has linked BPA to breast and prostate type of cancer in animals and obesity, Thyroid hardships, Reproductive irregularities, And neurologic situations in humans. In present cards 2010, A study published in the online journal PLoS One found that individuals with the highest levels of BPA in their body had the highest risk of heart disease. Laboratory studies have also suggested that BPA may interfere with the potency of chemotherapy drugs. But yet, Much of your analysis on BPA has been done on lab animals or has come from observational studies in people, Which don’t prove expected outcomes. BPA has not been proven to cause any disease or condition. The nation’s Toxicology Program reports that it has”Some headache” For effects on the mind, Activities, And prostate in fetuses, Babies, And youngsters at current human exposures to bisphenol A Companies that use BPA in a few, As well as industry financial concerns, The actual American Chemical Society, Persist that BPA is safe. The american Metal Packaging Alliance, A trade organization which represent canned food and beverage makers, Credits BPA linings for many people of contamination and foodborne illness from canned goods. Further studies ongoing. In one payemnt, The National Institutes of Health has about $30 million in funded research analyzing BPA, Which may help answer some of the ongoing questions regarding its safety. As 2008, The FDA issued a draft report praoclaiming that BPA is safe at current levels of exposure. , in 2010, The agency changed its position as further evidence build up. The FDA’s on-line store states that it”Shares the perspective of the National Toxicology Program that recent surveys provide reason for some concern about the potential effects of BPA on the brain, Actions, And prostate related of fetuses, Little ones,And kids. FDA also recognizes substantial uncertainties according to the overall interpretation of these studies and their potential implications for human health effects of BPA exposure, Regarding March 30, 2012, The FDA denied a petition filed by the Natural solutions Defense Council(NRDC) That asked the FDA to ban BPA in food products. In its effect letter to the NRDC, The FDA states that going barefoot”Takes this concern earnestly” And is defined as”Continuing to review scientific data rrn regards to the safety of BPA custom cowboys jersey, But there was not enough scientific evidence to help with the ban. Almost certainly can’t not entirely. BPA is in so many types of consumer products and packaging that everybody has some levels of BPA in his or her body. But if you are engaged, There are methods to reduce your exposure. Some tips from the breast cancers Fund and Frederick vom Saal, Expert degree, A professor of biological sciences at the University of Missouri and one of the main researchers into BPA: Eat inventive, Non prepackaged food if you can, In a study published in March in the journal environment Health Perspectives, Families reduced their BPA levels by 60% to 75% after just five days of eating freshly prepared organic meals that avoided connection with packaging containing BPA.

Final Assembly

The guitar is now polished to a high gloss are ready to have the hardware installed.

Before installing the tuning machines I need to remove the oversprayed lacquer from the holes that were drilled into the peghead or the machines will not turn smoothly.  This is accomplished with a rattail file and must be done very carefully to avoid chipping the lacquer in the string slots. Read more

Sanding and Buffing the Lacquer

After the lacquer cures for a few weeks it can be sanded perfectly level and buffed to a high gloss.  During those weeks, almost all of the solvents evaporate and the remaining solids get dry and hard.  Instrument grade lacquer isn’t the same as other lacquers, it contains certain chemicals that help it stay a bit more flexible, thus reducing the dampening effect that the coating of lacquer might otherwise have on the vibration of the wood. Read more

Constructing the Pyramid Bridge

While I wait a few weeks for the lacquer to dry I can build the bridge for the guitar.  Keeping true to another original design element, this guitar will have a “pyramid bridge.”  The pyramid bridge design was more common in the early 20th century, though there are certainly guitars being made today with them, including many of my own.  The strings on this guitar will be anchored to a metal tailpiece, so there will be no need for bridge pin holes in this bridge. Read more

Applying the Lacquer finish

I use nitrocellulose lacquer as the finish for most of the instruments I build.  Each of the many acceptable types of instrument finishes has its strengths and weaknesses.  I have worked with  lacquer for many years and have a pretty good understanding of it.  I have developed an approach to working with it that gives me consistent results.  It takes 4 to 6 weeks for me to get the finish on a guitar. Read more

Shaping the Neck

It is now time to shape the neck.  I use nothing but hand tools to complete this process; that is how I have always done it.  I have gotten a lot faster over the years and have developed a pretty good feel for the process without having to make frequent stops to make measurements, but I am always mindful of the fact that a mistake in this process could ruin all of my work up to this point.  One misplaced pull with the spokeshave could ruin the neck and force me to rework a great deal of the guitar, so I stay focused while I am shaping the neck and try not to rush. Read more

Neck (Pt. 5)

Now I am ready to install the frets.  In cross-section, fret wire is T-shaped.  The vertical part of the T has nubs sticking out from it and these serve to hold the fret wire firmly in the slot that was sawn into the fretboard.  I get fretwire by the pound, which is enough for 15 or 20 guitars.  It comes in straight, 2 foot lengths.  After cleaning it, I roll a length through a press to induce a curve which has a tighter radius than the curve on the fretboard.  This makes the installation a bit easier. Read more

Neck (Pt. 4)

The next part of the construction process is the fretboard.  This guitar is being built with a 26.5″ scale length.  The fret slots are very accurately sawn into the fretboard according to the scale length being used.  Placement of the fret slots is determined by something I have seen referred to as the “rule of 18,” but it would be more accurate to call it the “rule of 17.835.”  Here is how it works: to determine the distance of the first fret from the nut end of the fretboard, divide the scale length by 17.835.  With this scale, that comes out to 1.49″, so that is where the first fret slot should be sawn.  To determine the distance from the first fret to the second, you subtract 1.49″ from the original 26.5″ scale, then divide the remaining number by 17.835.  The quotient this time is a little less than 1.49″ and it tells me where the second slot should be placed.  This process of subtraction and division continues as you move up the fretboard until all of the slots are cut.  Read more

Neck (Pt. 3)

Pegheads and fretboards are the two most common spots on a guitar where decorative inlays can be found.  Adding some ornamentation in these areas can really dress up the guitar and, for my instruments, helps personalize it.  I always encourage my customers to tell me what they would like to have in these places.  Some customers don’t want anything at all, preferring the look of a simple, unadorned peghead and fretboard.  Some customers want something, but they aren’t quite sure what, so they ask me for suggestions.  For this guitar, my customer knew exactly what he wanted on the peghead and fretboard.  Read more

Neck (Pt. 2)

After the mortise and tennon joint is complete it is time to shape the heel of the neck (that’s the part of the neck that transitions to the body of the instrument).  With a lot of my guitars I keep the heel a uniform width from the fretboard down to the back of the guitar, but this heel is going to be tapered like it is on Stellas.  The initial shaping of the heel is done using chisels and rasps.  I generally mark one or two reference lines before getting started, but after that, I just rely on my eyes and experience with shaping almost 300 heels to tell me what to carve away. Read more